68908040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{911}}^1$

素因数の和:1014

約数の個数: 64

約数和(自身を含む): 162846720

約数和(自身を除く): 93938680

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 61, 62, 122, 124, 155, 244, 248, 305, 310, 488, 610, 620, 911, 1220, 1240, 1822, 1891, 2440, 3644, 3782, 4555, 7288, 7564, 9110, 9455, 15128, 18220, 18910, 28241, 36440, 37820, 55571, 56482, 75640, 111142, 112964, 141205, 222284, 225928, 277855, 282410, 444568, 555710, 564820, 1111420, 1129640, 1722701, 2222840, 3445402, 6890804, 8613505, 13781608, 17227010, 34454020, 68908040]

約数ペア:

[(1, 68908040), (2, 34454020), (4, 17227010), (5, 13781608), (8, 8613505), (10, 6890804), (20, 3445402), (31, 2222840), (40, 1722701), (61, 1129640), (62, 1111420), (122, 564820), (124, 555710), (155, 444568), (244, 282410), (248, 277855), (305, 225928), (310, 222284), (488, 141205), (610, 112964), (620, 111142), (911, 75640), (1220, 56482), (1240, 55571), (1822, 37820), (1891, 36440), (2440, 28241), (3644, 18910), (3782, 18220), (4555, 15128), (7288, 9455), (7564, 9110)]