221420320

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{11437}}^1$

素因数の和:11474

約数の個数: 72

約数和(自身を含む): 575034012

約数和(自身を除く): 353613692

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, 1210, 1760, 1936, 2420, 3872, 4840, 9680, 11437, 19360, 22874, 45748, 57185, 91496, 114370, 125807, 182992, 228740, 251614, 365984, 457480, 503228, 629035, 914960, 1006456, 1258070, 1383877, 1829920, 2012912, 2516140, 2767754, 4025824, 5032280, 5535508, 6919385, 10064560, 11071016, 13838770, 20129120, 22142032, 27677540, 44284064, 55355080, 110710160, 221420320]

約数ペア:

[(1, 221420320), (2, 110710160), (4, 55355080), (5, 44284064), (8, 27677540), (10, 22142032), (11, 20129120), (16, 13838770), (20, 11071016), (22, 10064560), (32, 6919385), (40, 5535508), (44, 5032280), (55, 4025824), (80, 2767754), (88, 2516140), (110, 2012912), (121, 1829920), (160, 1383877), (176, 1258070), (220, 1006456), (242, 914960), (352, 629035), (440, 503228), (484, 457480), (605, 365984), (880, 251614), (968, 228740), (1210, 182992), (1760, 125807), (1936, 114370), (2420, 91496), (3872, 57185), (4840, 45748), (9680, 22874), (11437, 19360)]