31435240

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{251}}^1$

素因数の和:394

約数の個数: 64

約数和(自身を含む): 74027520

約数和(自身を除く): 42592280

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 101, 124, 155, 202, 248, 251, 310, 404, 502, 505, 620, 808, 1004, 1010, 1240, 1255, 2008, 2020, 2510, 3131, 4040, 5020, 6262, 7781, 10040, 12524, 15562, 15655, 25048, 25351, 31124, 31310, 38905, 50702, 62248, 62620, 77810, 101404, 125240, 126755, 155620, 202808, 253510, 311240, 507020, 785881, 1014040, 1571762, 3143524, 3929405, 6287048, 7858810, 15717620, 31435240]

約数ペア:

[(1, 31435240), (2, 15717620), (4, 7858810), (5, 6287048), (8, 3929405), (10, 3143524), (20, 1571762), (31, 1014040), (40, 785881), (62, 507020), (101, 311240), (124, 253510), (155, 202808), (202, 155620), (248, 126755), (251, 125240), (310, 101404), (404, 77810), (502, 62620), (505, 62248), (620, 50702), (808, 38905), (1004, 31310), (1010, 31124), (1240, 25351), (1255, 25048), (2008, 15655), (2020, 15562), (2510, 12524), (3131, 10040), (4040, 7781), (5020, 6262)]