28081275

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{223}}^1$

素因数の和:332

約数の個数: 48

約数和(自身を含む): 49330176

約数和(自身を除く): 21248901

約数列:

[1, 3, 5, 15, 23, 25, 69, 73, 75, 115, 219, 223, 345, 365, 575, 669, 1095, 1115, 1679, 1725, 1825, 3345, 5037, 5129, 5475, 5575, 8395, 15387, 16279, 16725, 25185, 25645, 41975, 48837, 76935, 81395, 125925, 128225, 244185, 374417, 384675, 406975, 1123251, 1220925, 1872085, 5616255, 9360425, 28081275]

約数ペア:

[(1, 28081275), (3, 9360425), (5, 5616255), (15, 1872085), (23, 1220925), (25, 1123251), (69, 406975), (73, 384675), (75, 374417), (115, 244185), (219, 128225), (223, 125925), (345, 81395), (365, 76935), (575, 48837), (669, 41975), (1095, 25645), (1115, 25185), (1679, 16725), (1725, 16279), (1825, 15387), (3345, 8395), (5037, 5575), (5129, 5475)]