31477940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:241

約数の個数: 72

約数和(自身を含む): 73170720

約数和(自身を除く): 41692780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 130, 134, 139, 169, 260, 268, 278, 335, 338, 556, 670, 676, 695, 845, 871, 1340, 1390, 1690, 1742, 1807, 2780, 3380, 3484, 3614, 4355, 7228, 8710, 9035, 9313, 11323, 17420, 18070, 18626, 22646, 23491, 36140, 37252, 45292, 46565, 46982, 56615, 93130, 93964, 113230, 117455, 121069, 186260, 226460, 234910, 242138, 469820, 484276, 605345, 1210690, 1573897, 2421380, 3147794, 6295588, 7869485, 15738970, 31477940]

約数ペア:

[(1, 31477940), (2, 15738970), (4, 7869485), (5, 6295588), (10, 3147794), (13, 2421380), (20, 1573897), (26, 1210690), (52, 605345), (65, 484276), (67, 469820), (130, 242138), (134, 234910), (139, 226460), (169, 186260), (260, 121069), (268, 117455), (278, 113230), (335, 93964), (338, 93130), (556, 56615), (670, 46982), (676, 46565), (695, 45292), (845, 37252), (871, 36140), (1340, 23491), (1390, 22646), (1690, 18626), (1742, 18070), (1807, 17420), (2780, 11323), (3380, 9313), (3484, 9035), (3614, 8710), (4355, 7228)]