25148780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{229}}^1$

素因数の和:291

約数の個数: 72

約数和(自身を含む): 59312400

約数和(自身を除く): 34163620

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 229, 289, 323, 340, 380, 458, 578, 646, 916, 1145, 1156, 1292, 1445, 1615, 2290, 2890, 3230, 3893, 4351, 4580, 5491, 5780, 6460, 7786, 8702, 10982, 15572, 17404, 19465, 21755, 21964, 27455, 38930, 43510, 54910, 66181, 73967, 77860, 87020, 109820, 132362, 147934, 264724, 295868, 330905, 369835, 661810, 739670, 1257439, 1323620, 1479340, 2514878, 5029756, 6287195, 12574390, 25148780]

約数ペア:

[(1, 25148780), (2, 12574390), (4, 6287195), (5, 5029756), (10, 2514878), (17, 1479340), (19, 1323620), (20, 1257439), (34, 739670), (38, 661810), (68, 369835), (76, 330905), (85, 295868), (95, 264724), (170, 147934), (190, 132362), (229, 109820), (289, 87020), (323, 77860), (340, 73967), (380, 66181), (458, 54910), (578, 43510), (646, 38930), (916, 27455), (1145, 21964), (1156, 21755), (1292, 19465), (1445, 17404), (1615, 15572), (2290, 10982), (2890, 8702), (3230, 7786), (3893, 6460), (4351, 5780), (4580, 5491)]