81715320

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:250

約数の個数: 192

約数和(自身を含む): 283046400

約数和(自身を除く): 201331080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 23, 24, 30, 36, 40, 45, 46, 60, 69, 71, 72, 90, 92, 115, 120, 138, 139, 142, 180, 184, 207, 213, 230, 276, 278, 284, 345, 355, 360, 414, 417, 426, 460, 552, 556, 568, 639, 690, 695, 710, 828, 834, 852, 920, 1035, 1065, 1112, 1251, 1278, 1380, 1390, 1420, 1633, 1656, 1668, 1704, 2070, 2085, 2130, 2502, 2556, 2760, 2780, 2840, 3195, 3197, 3266, 3336, 4140, 4170, 4260, 4899, 5004, 5112, 5560, 6255, 6390, 6394, 6532, 8165, 8280, 8340, 8520, 9591, 9798, 9869, 10008, 12510, 12780, 12788, 13064, 14697, 15985, 16330, 16680, 19182, 19596, 19738, 24495, 25020, 25560, 25576, 28773, 29394, 29607, 31970, 32660, 38364, 39192, 39476, 47955, 48990, 49345, 50040, 57546, 58788, 59214, 63940, 65320, 73485, 76728, 78952, 88821, 95910, 97980, 98690, 115092, 117576, 118428, 127880, 143865, 146970, 148035, 177642, 191820, 195960, 197380, 226987, 230184, 236856, 287730, 293940, 296070, 355284, 383640, 394760, 444105, 453974, 575460, 587880, 592140, 680961, 710568, 888210, 907948, 1134935, 1150920, 1184280, 1361922, 1776420, 1815896, 2042883, 2269870, 2723844, 3404805, 3552840, 4085766, 4539740, 5447688, 6809610, 8171532, 9079480, 10214415, 13619220, 16343064, 20428830, 27238440, 40857660, 81715320]

約数ペア:

[(1, 81715320), (2, 40857660), (3, 27238440), (4, 20428830), (5, 16343064), (6, 13619220), (8, 10214415), (9, 9079480), (10, 8171532), (12, 6809610), (15, 5447688), (18, 4539740), (20, 4085766), (23, 3552840), (24, 3404805), (30, 2723844), (36, 2269870), (40, 2042883), (45, 1815896), (46, 1776420), (60, 1361922), (69, 1184280), (71, 1150920), (72, 1134935), (90, 907948), (92, 888210), (115, 710568), (120, 680961), (138, 592140), (139, 587880), (142, 575460), (180, 453974), (184, 444105), (207, 394760), (213, 383640), (230, 355284), (276, 296070), (278, 293940), (284, 287730), (345, 236856), (355, 230184), (360, 226987), (414, 197380), (417, 195960), (426, 191820), (460, 177642), (552, 148035), (556, 146970), (568, 143865), (639, 127880), (690, 118428), (695, 117576), (710, 115092), (828, 98690), (834, 97980), (852, 95910), (920, 88821), (1035, 78952), (1065, 76728), (1112, 73485), (1251, 65320), (1278, 63940), (1380, 59214), (1390, 58788), (1420, 57546), (1633, 50040), (1656, 49345), (1668, 48990), (1704, 47955), (2070, 39476), (2085, 39192), (2130, 38364), (2502, 32660), (2556, 31970), (2760, 29607), (2780, 29394), (2840, 28773), (3195, 25576), (3197, 25560), (3266, 25020), (3336, 24495), (4140, 19738), (4170, 19596), (4260, 19182), (4899, 16680), (5004, 16330), (5112, 15985), (5560, 14697), (6255, 13064), (6390, 12788), (6394, 12780), (6532, 12510), (8165, 10008), (8280, 9869), (8340, 9798), (8520, 9591)]