31247380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{499}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 68544000

約数和(自身を除く): 37296620

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 101, 124, 155, 202, 310, 404, 499, 505, 620, 998, 1010, 1996, 2020, 2495, 3131, 4990, 6262, 9980, 12524, 15469, 15655, 30938, 31310, 50399, 61876, 62620, 77345, 100798, 154690, 201596, 251995, 309380, 503990, 1007980, 1562369, 3124738, 6249476, 7811845, 15623690, 31247380]

約数ペア:

[(1, 31247380), (2, 15623690), (4, 7811845), (5, 6249476), (10, 3124738), (20, 1562369), (31, 1007980), (62, 503990), (101, 309380), (124, 251995), (155, 201596), (202, 154690), (310, 100798), (404, 77345), (499, 62620), (505, 61876), (620, 50399), (998, 31310), (1010, 30938), (1996, 15655), (2020, 15469), (2495, 12524), (3131, 9980), (4990, 6262)]