21018560

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3457}}^1$

素因数の和:3493

約数の個数: 56

約数和(自身を含む): 52699920

約数和(自身を除く): 31681360

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 152, 160, 190, 304, 320, 380, 608, 760, 1216, 1520, 3040, 3457, 6080, 6914, 13828, 17285, 27656, 34570, 55312, 65683, 69140, 110624, 131366, 138280, 221248, 262732, 276560, 328415, 525464, 553120, 656830, 1050928, 1106240, 1313660, 2101856, 2627320, 4203712, 5254640, 10509280, 21018560]

約数ペア:

[(1, 21018560), (2, 10509280), (4, 5254640), (5, 4203712), (8, 2627320), (10, 2101856), (16, 1313660), (19, 1106240), (20, 1050928), (32, 656830), (38, 553120), (40, 525464), (64, 328415), (76, 276560), (80, 262732), (95, 221248), (152, 138280), (160, 131366), (190, 110624), (304, 69140), (320, 65683), (380, 55312), (608, 34570), (760, 27656), (1216, 17285), (1520, 13828), (3040, 6914), (3457, 6080)]