21064980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{8563}}^1$

素因数の和:8616

約数の個数: 48

約数和(自身を含む): 60427584

約数和(自身を除く): 39362604

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 41, 60, 82, 123, 164, 205, 246, 410, 492, 615, 820, 1230, 2460, 8563, 17126, 25689, 34252, 42815, 51378, 85630, 102756, 128445, 171260, 256890, 351083, 513780, 702166, 1053249, 1404332, 1755415, 2106498, 3510830, 4212996, 5266245, 7021660, 10532490, 21064980]

約数ペア:

[(1, 21064980), (2, 10532490), (3, 7021660), (4, 5266245), (5, 4212996), (6, 3510830), (10, 2106498), (12, 1755415), (15, 1404332), (20, 1053249), (30, 702166), (41, 513780), (60, 351083), (82, 256890), (123, 171260), (164, 128445), (205, 102756), (246, 85630), (410, 51378), (492, 42815), (615, 34252), (820, 25689), (1230, 17126), (2460, 8563)]