20339990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1$

素因数の和:257

約数の個数: 64

約数和(自身を含む): 43156800

約数和(自身を除く): 22816810

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 73, 85, 110, 146, 149, 170, 187, 298, 365, 374, 730, 745, 803, 935, 1241, 1490, 1606, 1639, 1870, 2482, 2533, 3278, 4015, 5066, 6205, 8030, 8195, 10877, 12410, 12665, 13651, 16390, 21754, 25330, 27302, 27863, 54385, 55726, 68255, 108770, 119647, 136510, 139315, 184909, 239294, 278630, 369818, 598235, 924545, 1196470, 1849090, 2033999, 4067998, 10169995, 20339990]

約数ペア:

[(1, 20339990), (2, 10169995), (5, 4067998), (10, 2033999), (11, 1849090), (17, 1196470), (22, 924545), (34, 598235), (55, 369818), (73, 278630), (85, 239294), (110, 184909), (146, 139315), (149, 136510), (170, 119647), (187, 108770), (298, 68255), (365, 55726), (374, 54385), (730, 27863), (745, 27302), (803, 25330), (935, 21754), (1241, 16390), (1490, 13651), (1606, 12665), (1639, 12410), (1870, 10877), (2482, 8195), (2533, 8030), (3278, 6205), (4015, 5066)]