31844440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{421}}^1$

素因数の和:524

約数の個数: 64

約数和(自身を含む): 75352320

約数和(自身を除く): 43507880

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 61, 62, 122, 124, 155, 244, 248, 305, 310, 421, 488, 610, 620, 842, 1220, 1240, 1684, 1891, 2105, 2440, 3368, 3782, 4210, 7564, 8420, 9455, 13051, 15128, 16840, 18910, 25681, 26102, 37820, 51362, 52204, 65255, 75640, 102724, 104408, 128405, 130510, 205448, 256810, 261020, 513620, 522040, 796111, 1027240, 1592222, 3184444, 3980555, 6368888, 7961110, 15922220, 31844440]

約数ペア:

[(1, 31844440), (2, 15922220), (4, 7961110), (5, 6368888), (8, 3980555), (10, 3184444), (20, 1592222), (31, 1027240), (40, 796111), (61, 522040), (62, 513620), (122, 261020), (124, 256810), (155, 205448), (244, 130510), (248, 128405), (305, 104408), (310, 102724), (421, 75640), (488, 65255), (610, 52204), (620, 51362), (842, 37820), (1220, 26102), (1240, 25681), (1684, 18910), (1891, 16840), (2105, 15128), (2440, 13051), (3368, 9455), (3782, 8420), (4210, 7564)]