20291908

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{521}}^1$

素因数の和:652

約数の個数: 48

約数和(自身を含む): 44198784

約数和(自身を除く): 23906876

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 107, 182, 214, 364, 428, 521, 749, 1042, 1391, 1498, 2084, 2782, 2996, 3647, 5564, 6773, 7294, 9737, 13546, 14588, 19474, 27092, 38948, 47411, 55747, 94822, 111494, 189644, 222988, 390229, 724711, 780458, 1449422, 1560916, 2898844, 5072977, 10145954, 20291908]

約数ペア:

[(1, 20291908), (2, 10145954), (4, 5072977), (7, 2898844), (13, 1560916), (14, 1449422), (26, 780458), (28, 724711), (52, 390229), (91, 222988), (107, 189644), (182, 111494), (214, 94822), (364, 55747), (428, 47411), (521, 38948), (749, 27092), (1042, 19474), (1391, 14588), (1498, 13546), (2084, 9737), (2782, 7294), (2996, 6773), (3647, 5564)]