21970286

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{491}}^1\times {\mathrm{1721}}^1$

素因数の和:2227

約数の個数: 16

約数和(自身を含む): 35583408

約数和(自身を除く): 13613122

約数列:

[1, 2, 13, 26, 491, 982, 1721, 3442, 6383, 12766, 22373, 44746, 845011, 1690022, 10985143, 21970286]

約数ペア:

[(1, 21970286), (2, 10985143), (13, 1690022), (26, 845011), (491, 44746), (982, 22373), (1721, 12766), (3442, 6383)]