20045925

素因数分解:

$3^2\times 5^2\times {\mathrm{41}}^2\times {\mathrm{53}}^1$

素因数の和:151

約数の個数: 54

約数和(自身を含む): 37495926

約数和(自身を除く): 17450001

約数列:

[1, 3, 5, 9, 15, 25, 41, 45, 53, 75, 123, 159, 205, 225, 265, 369, 477, 615, 795, 1025, 1325, 1681, 1845, 2173, 2385, 3075, 3975, 5043, 6519, 8405, 9225, 10865, 11925, 15129, 19557, 25215, 32595, 42025, 54325, 75645, 89093, 97785, 126075, 162975, 267279, 378225, 445465, 488925, 801837, 1336395, 2227325, 4009185, 6681975, 20045925]

約数ペア:

[(1, 20045925), (3, 6681975), (5, 4009185), (9, 2227325), (15, 1336395), (25, 801837), (41, 488925), (45, 445465), (53, 378225), (75, 267279), (123, 162975), (159, 126075), (205, 97785), (225, 89093), (265, 75645), (369, 54325), (477, 42025), (615, 32595), (795, 25215), (1025, 19557), (1325, 15129), (1681, 11925), (1845, 10865), (2173, 9225), (2385, 8405), (3075, 6519), (3975, 5043)]