20071289679

素因数分解:

$3^1\times 7^1\times {\mathrm{1489}}^1\times {\mathrm{641891}}^1$

素因数の和:643390

約数の個数: 16

約数和(自身を含む): 30605410560

約数和(自身を除く): 10534120881

約数列:

[1, 3, 7, 21, 1489, 4467, 10423, 31269, 641891, 1925673, 4493237, 13479711, 955775699, 2867327097, 6690429893, 20071289679]

約数ペア:

[(1, 20071289679), (3, 6690429893), (7, 2867327097), (21, 955775699), (1489, 13479711), (4467, 4493237), (10423, 1925673), (31269, 641891)]