20617875

素因数分解:

$3^3\times 5^3\times {\mathrm{41}}^1\times {\mathrm{149}}^1$

素因数の和:214

約数の個数: 64

約数和(自身を含む): 39312000

約数和(自身を除く): 18694125

約数列:

[1, 3, 5, 9, 15, 25, 27, 41, 45, 75, 123, 125, 135, 149, 205, 225, 369, 375, 447, 615, 675, 745, 1025, 1107, 1125, 1341, 1845, 2235, 3075, 3375, 3725, 4023, 5125, 5535, 6109, 6705, 9225, 11175, 15375, 18327, 18625, 20115, 27675, 30545, 33525, 46125, 54981, 55875, 91635, 100575, 138375, 152725, 164943, 167625, 274905, 458175, 502875, 763625, 824715, 1374525, 2290875, 4123575, 6872625, 20617875]

約数ペア:

[(1, 20617875), (3, 6872625), (5, 4123575), (9, 2290875), (15, 1374525), (25, 824715), (27, 763625), (41, 502875), (45, 458175), (75, 274905), (123, 167625), (125, 164943), (135, 152725), (149, 138375), (205, 100575), (225, 91635), (369, 55875), (375, 54981), (447, 46125), (615, 33525), (675, 30545), (745, 27675), (1025, 20115), (1107, 18625), (1125, 18327), (1341, 15375), (1845, 11175), (2235, 9225), (3075, 6705), (3375, 6109), (3725, 5535), (4023, 5125)]