20021325

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{383}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 35997696

約数和(自身を除く): 15976371

約数列:

[1, 3, 5, 15, 17, 25, 41, 51, 75, 85, 123, 205, 255, 383, 425, 615, 697, 1025, 1149, 1275, 1915, 2091, 3075, 3485, 5745, 6511, 9575, 10455, 15703, 17425, 19533, 28725, 32555, 47109, 52275, 78515, 97665, 162775, 235545, 266951, 392575, 488325, 800853, 1177725, 1334755, 4004265, 6673775, 20021325]

約数ペア:

[(1, 20021325), (3, 6673775), (5, 4004265), (15, 1334755), (17, 1177725), (25, 800853), (41, 488325), (51, 392575), (75, 266951), (85, 235545), (123, 162775), (205, 97665), (255, 78515), (383, 52275), (425, 47109), (615, 32555), (697, 28725), (1025, 19533), (1149, 17425), (1275, 15703), (1915, 10455), (2091, 9575), (3075, 6511), (3485, 5745)]