21297770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{419}}^1$

素因数の和:479

約数の個数: 64

約数和(自身を含む): 45722880

約数和(自身を除く): 24425110

約数列:

[1, 2, 5, 10, 13, 17, 23, 26, 34, 46, 65, 85, 115, 130, 170, 221, 230, 299, 391, 419, 442, 598, 782, 838, 1105, 1495, 1955, 2095, 2210, 2990, 3910, 4190, 5083, 5447, 7123, 9637, 10166, 10894, 14246, 19274, 25415, 27235, 35615, 48185, 50830, 54470, 71230, 92599, 96370, 125281, 163829, 185198, 250562, 327658, 462995, 626405, 819145, 925990, 1252810, 1638290, 2129777, 4259554, 10648885, 21297770]

約数ペア:

[(1, 21297770), (2, 10648885), (5, 4259554), (10, 2129777), (13, 1638290), (17, 1252810), (23, 925990), (26, 819145), (34, 626405), (46, 462995), (65, 327658), (85, 250562), (115, 185198), (130, 163829), (170, 125281), (221, 96370), (230, 92599), (299, 71230), (391, 54470), (419, 50830), (442, 48185), (598, 35615), (782, 27235), (838, 25415), (1105, 19274), (1495, 14246), (1955, 10894), (2095, 10166), (2210, 9637), (2990, 7123), (3910, 5447), (4190, 5083)]