20369140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{443}}^1$

素因数の和:493

約数の個数: 72

約数和(自身を含む): 49603680

約数和(自身を除く): 29234540

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 121, 190, 209, 220, 242, 380, 418, 443, 484, 605, 836, 886, 1045, 1210, 1772, 2090, 2215, 2299, 2420, 4180, 4430, 4598, 4873, 8417, 8860, 9196, 9746, 11495, 16834, 19492, 22990, 24365, 33668, 42085, 45980, 48730, 53603, 84170, 92587, 97460, 107206, 168340, 185174, 214412, 268015, 370348, 462935, 536030, 925870, 1018457, 1072060, 1851740, 2036914, 4073828, 5092285, 10184570, 20369140]

約数ペア:

[(1, 20369140), (2, 10184570), (4, 5092285), (5, 4073828), (10, 2036914), (11, 1851740), (19, 1072060), (20, 1018457), (22, 925870), (38, 536030), (44, 462935), (55, 370348), (76, 268015), (95, 214412), (110, 185174), (121, 168340), (190, 107206), (209, 97460), (220, 92587), (242, 84170), (380, 53603), (418, 48730), (443, 45980), (484, 42085), (605, 33668), (836, 24365), (886, 22990), (1045, 19492), (1210, 16834), (1772, 11495), (2090, 9746), (2215, 9196), (2299, 8860), (2420, 8417), (4180, 4873), (4430, 4598)]