20989668

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{3163}}^1$

素因数の和:3256

約数の個数: 48

約数和(自身を含む): 56698880

約数和(自身を除く): 35709212

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 79, 84, 158, 237, 316, 474, 553, 948, 1106, 1659, 2212, 3163, 3318, 6326, 6636, 9489, 12652, 18978, 22141, 37956, 44282, 66423, 88564, 132846, 249877, 265692, 499754, 749631, 999508, 1499262, 1749139, 2998524, 3498278, 5247417, 6996556, 10494834, 20989668]

約数ペア:

[(1, 20989668), (2, 10494834), (3, 6996556), (4, 5247417), (6, 3498278), (7, 2998524), (12, 1749139), (14, 1499262), (21, 999508), (28, 749631), (42, 499754), (79, 265692), (84, 249877), (158, 132846), (237, 88564), (316, 66423), (474, 44282), (553, 37956), (948, 22141), (1106, 18978), (1659, 12652), (2212, 9489), (3163, 6636), (3318, 6326)]