20750715

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:241

約数の個数: 64

約数和(自身を含む): 39674880

約数和(自身を除く): 18924165

約数列:

[1, 3, 5, 9, 15, 23, 27, 41, 45, 69, 115, 123, 135, 163, 205, 207, 345, 369, 489, 615, 621, 815, 943, 1035, 1107, 1467, 1845, 2445, 2829, 3105, 3749, 4401, 4715, 5535, 6683, 7335, 8487, 11247, 14145, 18745, 20049, 22005, 25461, 33415, 33741, 42435, 56235, 60147, 100245, 101223, 127305, 153709, 168705, 180441, 300735, 461127, 506115, 768545, 902205, 1383381, 2305635, 4150143, 6916905, 20750715]

約数ペア:

[(1, 20750715), (3, 6916905), (5, 4150143), (9, 2305635), (15, 1383381), (23, 902205), (27, 768545), (41, 506115), (45, 461127), (69, 300735), (115, 180441), (123, 168705), (135, 153709), (163, 127305), (205, 101223), (207, 100245), (345, 60147), (369, 56235), (489, 42435), (615, 33741), (621, 33415), (815, 25461), (943, 22005), (1035, 20049), (1107, 18745), (1467, 14145), (1845, 11247), (2445, 8487), (2829, 7335), (3105, 6683), (3749, 5535), (4401, 4715)]