21319572

素因数分解:

$2^2\times 3^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{523}}^1$

素因数の和:652

約数の個数: 48

約数和(自身を含む): 51645440

約数和(自身を除く): 30325868

約数列:

[1, 2, 3, 4, 6, 12, 43, 79, 86, 129, 158, 172, 237, 258, 316, 474, 516, 523, 948, 1046, 1569, 2092, 3138, 3397, 6276, 6794, 10191, 13588, 20382, 22489, 40764, 41317, 44978, 67467, 82634, 89956, 123951, 134934, 165268, 247902, 269868, 495804, 1776631, 3553262, 5329893, 7106524, 10659786, 21319572]

約数ペア:

[(1, 21319572), (2, 10659786), (3, 7106524), (4, 5329893), (6, 3553262), (12, 1776631), (43, 495804), (79, 269868), (86, 247902), (129, 165268), (158, 134934), (172, 123951), (237, 89956), (258, 82634), (316, 67467), (474, 44978), (516, 41317), (523, 40764), (948, 22489), (1046, 20382), (1569, 13588), (2092, 10191), (3138, 6794), (3397, 6276)]