21016560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{1307}}^1$

素因数の和:1390

約数の個数: 80

約数和(自身を含む): 66174336

約数和(自身を除く): 45157776

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 67, 80, 120, 134, 201, 240, 268, 335, 402, 536, 670, 804, 1005, 1072, 1307, 1340, 1608, 2010, 2614, 2680, 3216, 3921, 4020, 5228, 5360, 6535, 7842, 8040, 10456, 13070, 15684, 16080, 19605, 20912, 26140, 31368, 39210, 52280, 62736, 78420, 87569, 104560, 156840, 175138, 262707, 313680, 350276, 437845, 525414, 700552, 875690, 1050828, 1313535, 1401104, 1751380, 2101656, 2627070, 3502760, 4203312, 5254140, 7005520, 10508280, 21016560]

約数ペア:

[(1, 21016560), (2, 10508280), (3, 7005520), (4, 5254140), (5, 4203312), (6, 3502760), (8, 2627070), (10, 2101656), (12, 1751380), (15, 1401104), (16, 1313535), (20, 1050828), (24, 875690), (30, 700552), (40, 525414), (48, 437845), (60, 350276), (67, 313680), (80, 262707), (120, 175138), (134, 156840), (201, 104560), (240, 87569), (268, 78420), (335, 62736), (402, 52280), (536, 39210), (670, 31368), (804, 26140), (1005, 20912), (1072, 19605), (1307, 16080), (1340, 15684), (1608, 13070), (2010, 10456), (2614, 8040), (2680, 7842), (3216, 6535), (3921, 5360), (4020, 5228)]