20397286

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{233}}^1$

素因数の和:305

約数の個数: 48

約数和(自身を含む): 39053664

約数和(自身を除く): 18656378

約数列:

[1, 2, 7, 13, 14, 26, 37, 74, 91, 169, 182, 233, 259, 338, 466, 481, 518, 962, 1183, 1631, 2366, 3029, 3262, 3367, 6058, 6253, 6734, 8621, 12506, 17242, 21203, 39377, 42406, 43771, 60347, 78754, 87542, 112073, 120694, 224146, 275639, 551278, 784511, 1456949, 1569022, 2913898, 10198643, 20397286]

約数ペア:

[(1, 20397286), (2, 10198643), (7, 2913898), (13, 1569022), (14, 1456949), (26, 784511), (37, 551278), (74, 275639), (91, 224146), (169, 120694), (182, 112073), (233, 87542), (259, 78754), (338, 60347), (466, 43771), (481, 42406), (518, 39377), (962, 21203), (1183, 17242), (1631, 12506), (2366, 8621), (3029, 6734), (3262, 6253), (3367, 6058)]