7639640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:204

約数の個数: 64

約数和(自身を含む): 18213120

約数和(自身を除く): 10573480

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 61, 62, 101, 122, 124, 155, 202, 244, 248, 305, 310, 404, 488, 505, 610, 620, 808, 1010, 1220, 1240, 1891, 2020, 2440, 3131, 3782, 4040, 6161, 6262, 7564, 9455, 12322, 12524, 15128, 15655, 18910, 24644, 25048, 30805, 31310, 37820, 49288, 61610, 62620, 75640, 123220, 125240, 190991, 246440, 381982, 763964, 954955, 1527928, 1909910, 3819820, 7639640]

約数ペア:

[(1, 7639640), (2, 3819820), (4, 1909910), (5, 1527928), (8, 954955), (10, 763964), (20, 381982), (31, 246440), (40, 190991), (61, 125240), (62, 123220), (101, 75640), (122, 62620), (124, 61610), (155, 49288), (202, 37820), (244, 31310), (248, 30805), (305, 25048), (310, 24644), (404, 18910), (488, 15655), (505, 15128), (610, 12524), (620, 12322), (808, 9455), (1010, 7564), (1220, 6262), (1240, 6161), (1891, 4040), (2020, 3782), (2440, 3131)]