31365620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{997}}^1$

素因数の和:1041

約数の個数: 72

約数和(自身を含む): 78047592

約数和(自身を除く): 46681972

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 121, 130, 143, 220, 242, 260, 286, 484, 572, 605, 715, 997, 1210, 1430, 1573, 1994, 2420, 2860, 3146, 3988, 4985, 6292, 7865, 9970, 10967, 12961, 15730, 19940, 21934, 25922, 31460, 43868, 51844, 54835, 64805, 109670, 120637, 129610, 142571, 219340, 241274, 259220, 285142, 482548, 570284, 603185, 712855, 1206370, 1425710, 1568281, 2412740, 2851420, 3136562, 6273124, 7841405, 15682810, 31365620]

約数ペア:

[(1, 31365620), (2, 15682810), (4, 7841405), (5, 6273124), (10, 3136562), (11, 2851420), (13, 2412740), (20, 1568281), (22, 1425710), (26, 1206370), (44, 712855), (52, 603185), (55, 570284), (65, 482548), (110, 285142), (121, 259220), (130, 241274), (143, 219340), (220, 142571), (242, 129610), (260, 120637), (286, 109670), (484, 64805), (572, 54835), (605, 51844), (715, 43868), (997, 31460), (1210, 25922), (1430, 21934), (1573, 19940), (1994, 15730), (2420, 12961), (2860, 10967), (3146, 9970), (3988, 7865), (4985, 6292)]