20731816

素因数分解:

$2^3\times 7^1\times {\mathrm{239}}^1\times {\mathrm{1549}}^1$

素因数の和:1801

約数の個数: 32

約数和(自身を含む): 44640000

約数和(自身を除く): 23908184

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 239, 478, 956, 1549, 1673, 1912, 3098, 3346, 6196, 6692, 10843, 12392, 13384, 21686, 43372, 86744, 370211, 740422, 1480844, 2591477, 2961688, 5182954, 10365908, 20731816]

約数ペア:

[(1, 20731816), (2, 10365908), (4, 5182954), (7, 2961688), (8, 2591477), (14, 1480844), (28, 740422), (56, 370211), (239, 86744), (478, 43372), (956, 21686), (1549, 13384), (1673, 12392), (1912, 10843), (3098, 6692), (3346, 6196)]