28218240

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:122

約数の個数: 256

約数和(自身を含む): 105753600

約数和(自身を除く): 77535360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 27, 30, 32, 36, 40, 45, 46, 48, 54, 60, 64, 69, 71, 72, 80, 90, 92, 96, 108, 115, 120, 128, 135, 138, 142, 144, 160, 180, 184, 192, 207, 213, 216, 230, 240, 270, 276, 284, 288, 320, 345, 355, 360, 368, 384, 414, 426, 432, 460, 480, 540, 552, 568, 576, 621, 639, 640, 690, 710, 720, 736, 828, 852, 864, 920, 960, 1035, 1065, 1080, 1104, 1136, 1152, 1242, 1278, 1380, 1420, 1440, 1472, 1633, 1656, 1704, 1728, 1840, 1917, 1920, 2070, 2130, 2160, 2208, 2272, 2484, 2556, 2760, 2840, 2880, 2944, 3105, 3195, 3266, 3312, 3408, 3456, 3680, 3834, 4140, 4260, 4320, 4416, 4544, 4899, 4968, 5112, 5520, 5680, 5760, 6210, 6390, 6532, 6624, 6816, 7360, 7668, 8165, 8280, 8520, 8640, 8832, 9088, 9585, 9798, 9936, 10224, 11040, 11360, 12420, 12780, 13064, 13248, 13632, 14697, 14720, 15336, 16330, 16560, 17040, 17280, 19170, 19596, 19872, 20448, 22080, 22720, 24495, 24840, 25560, 26128, 26496, 27264, 29394, 30672, 32660, 33120, 34080, 38340, 39192, 39744, 40896, 44091, 44160, 45440, 48990, 49680, 51120, 52256, 58788, 61344, 65320, 66240, 68160, 73485, 76680, 78384, 79488, 81792, 88182, 97980, 99360, 102240, 104512, 117576, 122688, 130640, 132480, 136320, 146970, 153360, 156768, 176364, 195960, 198720, 204480, 209024, 220455, 235152, 245376, 261280, 293940, 306720, 313536, 352728, 391920, 397440, 408960, 440910, 470304, 522560, 587880, 613440, 627072, 705456, 783840, 881820, 940608, 1045120, 1175760, 1226880, 1410912, 1567680, 1763640, 1881216, 2351520, 2821824, 3135360, 3527280, 4703040, 5643648, 7054560, 9406080, 14109120, 28218240]

約数ペア:

[(1, 28218240), (2, 14109120), (3, 9406080), (4, 7054560), (5, 5643648), (6, 4703040), (8, 3527280), (9, 3135360), (10, 2821824), (12, 2351520), (15, 1881216), (16, 1763640), (18, 1567680), (20, 1410912), (23, 1226880), (24, 1175760), (27, 1045120), (30, 940608), (32, 881820), (36, 783840), (40, 705456), (45, 627072), (46, 613440), (48, 587880), (54, 522560), (60, 470304), (64, 440910), (69, 408960), (71, 397440), (72, 391920), (80, 352728), (90, 313536), (92, 306720), (96, 293940), (108, 261280), (115, 245376), (120, 235152), (128, 220455), (135, 209024), (138, 204480), (142, 198720), (144, 195960), (160, 176364), (180, 156768), (184, 153360), (192, 146970), (207, 136320), (213, 132480), (216, 130640), (230, 122688), (240, 117576), (270, 104512), (276, 102240), (284, 99360), (288, 97980), (320, 88182), (345, 81792), (355, 79488), (360, 78384), (368, 76680), (384, 73485), (414, 68160), (426, 66240), (432, 65320), (460, 61344), (480, 58788), (540, 52256), (552, 51120), (568, 49680), (576, 48990), (621, 45440), (639, 44160), (640, 44091), (690, 40896), (710, 39744), (720, 39192), (736, 38340), (828, 34080), (852, 33120), (864, 32660), (920, 30672), (960, 29394), (1035, 27264), (1065, 26496), (1080, 26128), (1104, 25560), (1136, 24840), (1152, 24495), (1242, 22720), (1278, 22080), (1380, 20448), (1420, 19872), (1440, 19596), (1472, 19170), (1633, 17280), (1656, 17040), (1704, 16560), (1728, 16330), (1840, 15336), (1917, 14720), (1920, 14697), (2070, 13632), (2130, 13248), (2160, 13064), (2208, 12780), (2272, 12420), (2484, 11360), (2556, 11040), (2760, 10224), (2840, 9936), (2880, 9798), (2944, 9585), (3105, 9088), (3195, 8832), (3266, 8640), (3312, 8520), (3408, 8280), (3456, 8165), (3680, 7668), (3834, 7360), (4140, 6816), (4260, 6624), (4320, 6532), (4416, 6390), (4544, 6210), (4899, 5760), (4968, 5680), (5112, 5520)]