8128640

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{977}}^1$

素因数の和:1009

約数の個数: 64

約数和(自身を含む): 20948760

約数和(自身を除く): 12820120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 977, 1040, 1664, 1954, 2080, 3908, 4160, 4885, 7816, 8320, 9770, 12701, 15632, 19540, 25402, 31264, 39080, 50804, 62528, 63505, 78160, 101608, 125056, 127010, 156320, 203216, 254020, 312640, 406432, 508040, 625280, 812864, 1016080, 1625728, 2032160, 4064320, 8128640]

約数ペア:

[(1, 8128640), (2, 4064320), (4, 2032160), (5, 1625728), (8, 1016080), (10, 812864), (13, 625280), (16, 508040), (20, 406432), (26, 312640), (32, 254020), (40, 203216), (52, 156320), (64, 127010), (65, 125056), (80, 101608), (104, 78160), (128, 63505), (130, 62528), (160, 50804), (208, 39080), (260, 31264), (320, 25402), (416, 19540), (520, 15632), (640, 12701), (832, 9770), (977, 8320), (1040, 7816), (1664, 4885), (1954, 4160), (2080, 3908)]