807640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{331}}^1$

素因数の和:403

約数の個数: 32

約数和(自身を含む): 1852560

約数和(自身を除く): 1044920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 331, 488, 610, 662, 1220, 1324, 1655, 2440, 2648, 3310, 6620, 13240, 20191, 40382, 80764, 100955, 161528, 201910, 403820, 807640]

約数ペア:

[(1, 807640), (2, 403820), (4, 201910), (5, 161528), (8, 100955), (10, 80764), (20, 40382), (40, 20191), (61, 13240), (122, 6620), (244, 3310), (305, 2648), (331, 2440), (488, 1655), (610, 1324), (662, 1220)]