21397016

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{1201}}^1$

素因数の和:1355

約数の個数: 32

約数和(自身を含む): 42839280

約数和(自身を除く): 21442264

約数列:

[1, 2, 4, 8, 17, 34, 68, 131, 136, 262, 524, 1048, 1201, 2227, 2402, 4454, 4804, 8908, 9608, 17816, 20417, 40834, 81668, 157331, 163336, 314662, 629324, 1258648, 2674627, 5349254, 10698508, 21397016]

約数ペア:

[(1, 21397016), (2, 10698508), (4, 5349254), (8, 2674627), (17, 1258648), (34, 629324), (68, 314662), (131, 163336), (136, 157331), (262, 81668), (524, 40834), (1048, 20417), (1201, 17816), (2227, 9608), (2402, 8908), (4454, 4804)]