21615360

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{433}}^1$

素因数の和:470

約数の個数: 144

約数和(自身を含む): 74516064

約数和(自身を除く): 52900704

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 128, 130, 156, 160, 192, 195, 208, 240, 256, 260, 312, 320, 384, 390, 416, 433, 480, 520, 624, 640, 768, 780, 832, 866, 960, 1040, 1248, 1280, 1299, 1560, 1664, 1732, 1920, 2080, 2165, 2496, 2598, 3120, 3328, 3464, 3840, 4160, 4330, 4992, 5196, 5629, 6240, 6495, 6928, 8320, 8660, 9984, 10392, 11258, 12480, 12990, 13856, 16640, 16887, 17320, 20784, 22516, 24960, 25980, 27712, 28145, 33774, 34640, 41568, 45032, 49920, 51960, 55424, 56290, 67548, 69280, 83136, 84435, 90064, 103920, 110848, 112580, 135096, 138560, 166272, 168870, 180128, 207840, 225160, 270192, 277120, 332544, 337740, 360256, 415680, 450320, 540384, 554240, 675480, 720512, 831360, 900640, 1080768, 1350960, 1441024, 1662720, 1801280, 2161536, 2701920, 3602560, 4323072, 5403840, 7205120, 10807680, 21615360]

約数ペア:

[(1, 21615360), (2, 10807680), (3, 7205120), (4, 5403840), (5, 4323072), (6, 3602560), (8, 2701920), (10, 2161536), (12, 1801280), (13, 1662720), (15, 1441024), (16, 1350960), (20, 1080768), (24, 900640), (26, 831360), (30, 720512), (32, 675480), (39, 554240), (40, 540384), (48, 450320), (52, 415680), (60, 360256), (64, 337740), (65, 332544), (78, 277120), (80, 270192), (96, 225160), (104, 207840), (120, 180128), (128, 168870), (130, 166272), (156, 138560), (160, 135096), (192, 112580), (195, 110848), (208, 103920), (240, 90064), (256, 84435), (260, 83136), (312, 69280), (320, 67548), (384, 56290), (390, 55424), (416, 51960), (433, 49920), (480, 45032), (520, 41568), (624, 34640), (640, 33774), (768, 28145), (780, 27712), (832, 25980), (866, 24960), (960, 22516), (1040, 20784), (1248, 17320), (1280, 16887), (1299, 16640), (1560, 13856), (1664, 12990), (1732, 12480), (1920, 11258), (2080, 10392), (2165, 9984), (2496, 8660), (2598, 8320), (3120, 6928), (3328, 6495), (3464, 6240), (3840, 5629), (4160, 5196), (4330, 4992)]