81870225

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1531}}^1$

素因数の和:1598

約数の個数: 48

約数和(自身を含む): 145895424

約数和(自身を除く): 64025199

約数列:

[1, 3, 5, 15, 23, 25, 31, 69, 75, 93, 115, 155, 345, 465, 575, 713, 775, 1531, 1725, 2139, 2325, 3565, 4593, 7655, 10695, 17825, 22965, 35213, 38275, 47461, 53475, 105639, 114825, 142383, 176065, 237305, 528195, 711915, 880325, 1091603, 1186525, 2640975, 3274809, 3559575, 5458015, 16374045, 27290075, 81870225]

約数ペア:

[(1, 81870225), (3, 27290075), (5, 16374045), (15, 5458015), (23, 3559575), (25, 3274809), (31, 2640975), (69, 1186525), (75, 1091603), (93, 880325), (115, 711915), (155, 528195), (345, 237305), (465, 176065), (575, 142383), (713, 114825), (775, 105639), (1531, 53475), (1725, 47461), (2139, 38275), (2325, 35213), (3565, 22965), (4593, 17825), (7655, 10695)]