21815090

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^4\times {\mathrm{149}}^1$

素因数の和:200

約数の個数: 40

約数和(自身を含む): 43483500

約数和(自身を除く): 21668410

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 149, 242, 298, 605, 745, 1210, 1331, 1490, 1639, 2662, 3278, 6655, 8195, 13310, 14641, 16390, 18029, 29282, 36058, 73205, 90145, 146410, 180290, 198319, 396638, 991595, 1983190, 2181509, 4363018, 10907545, 21815090]

約数ペア:

[(1, 21815090), (2, 10907545), (5, 4363018), (10, 2181509), (11, 1983190), (22, 991595), (55, 396638), (110, 198319), (121, 180290), (149, 146410), (242, 90145), (298, 73205), (605, 36058), (745, 29282), (1210, 18029), (1331, 16390), (1490, 14641), (1639, 13310), (2662, 8195), (3278, 6655)]