251919020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{6661}}^1$

素因数の和:6762

約数の個数: 48

約数和(自身を含む): 555131136

約数和(自身を除く): 303212116

約数列:

[1, 2, 4, 5, 10, 20, 31, 61, 62, 122, 124, 155, 244, 305, 310, 610, 620, 1220, 1891, 3782, 6661, 7564, 9455, 13322, 18910, 26644, 33305, 37820, 66610, 133220, 206491, 406321, 412982, 812642, 825964, 1032455, 1625284, 2031605, 2064910, 4063210, 4129820, 8126420, 12595951, 25191902, 50383804, 62979755, 125959510, 251919020]

約数ペア:

[(1, 251919020), (2, 125959510), (4, 62979755), (5, 50383804), (10, 25191902), (20, 12595951), (31, 8126420), (61, 4129820), (62, 4063210), (122, 2064910), (124, 2031605), (155, 1625284), (244, 1032455), (305, 825964), (310, 812642), (610, 412982), (620, 406321), (1220, 206491), (1891, 133220), (3782, 66610), (6661, 37820), (7564, 33305), (9455, 26644), (13322, 18910)]