20308640

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1049}}^1$

素因数の和:1086

約数の個数: 72

約数和(自身を含む): 52787700

約数和(自身を除く): 32479060

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 121, 160, 176, 220, 242, 352, 440, 484, 605, 880, 968, 1049, 1210, 1760, 1936, 2098, 2420, 3872, 4196, 4840, 5245, 8392, 9680, 10490, 11539, 16784, 19360, 20980, 23078, 33568, 41960, 46156, 57695, 83920, 92312, 115390, 126929, 167840, 184624, 230780, 253858, 369248, 461560, 507716, 634645, 923120, 1015432, 1269290, 1846240, 2030864, 2538580, 4061728, 5077160, 10154320, 20308640]

約数ペア:

[(1, 20308640), (2, 10154320), (4, 5077160), (5, 4061728), (8, 2538580), (10, 2030864), (11, 1846240), (16, 1269290), (20, 1015432), (22, 923120), (32, 634645), (40, 507716), (44, 461560), (55, 369248), (80, 253858), (88, 230780), (110, 184624), (121, 167840), (160, 126929), (176, 115390), (220, 92312), (242, 83920), (352, 57695), (440, 46156), (484, 41960), (605, 33568), (880, 23078), (968, 20980), (1049, 19360), (1210, 16784), (1760, 11539), (1936, 10490), (2098, 9680), (2420, 8392), (3872, 5245), (4196, 4840)]