28195401

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^2$

素因数の和:142

約数の個数: 48

約数和(自身を含む): 45795456

約数和(自身を除く): 17600055

約数列:

[1, 3, 13, 17, 23, 39, 43, 51, 69, 129, 221, 299, 391, 559, 663, 731, 897, 989, 1173, 1677, 1849, 2193, 2967, 5083, 5547, 9503, 12857, 15249, 16813, 24037, 28509, 31433, 38571, 42527, 50439, 72111, 94299, 127581, 218569, 408629, 552851, 655707, 722959, 1225887, 1658553, 2168877, 9398467, 28195401]

約数ペア:

[(1, 28195401), (3, 9398467), (13, 2168877), (17, 1658553), (23, 1225887), (39, 722959), (43, 655707), (51, 552851), (69, 408629), (129, 218569), (221, 127581), (299, 94299), (391, 72111), (559, 50439), (663, 42527), (731, 38571), (897, 31433), (989, 28509), (1173, 24037), (1677, 16813), (1849, 15249), (2193, 12857), (2967, 9503), (5083, 5547)]