19715490

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{499}}^1$

素因数の和:951

約数の個数: 48

約数和(自身を含む): 51480000

約数和(自身を除く): 31764510

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 439, 499, 878, 998, 1317, 1497, 2195, 2495, 2634, 2994, 3951, 4390, 4491, 4990, 6585, 7485, 7902, 8982, 13170, 14970, 19755, 22455, 39510, 44910, 219061, 438122, 657183, 1095305, 1314366, 1971549, 2190610, 3285915, 3943098, 6571830, 9857745, 19715490]

約数ペア:

[(1, 19715490), (2, 9857745), (3, 6571830), (5, 3943098), (6, 3285915), (9, 2190610), (10, 1971549), (15, 1314366), (18, 1095305), (30, 657183), (45, 438122), (90, 219061), (439, 44910), (499, 39510), (878, 22455), (998, 19755), (1317, 14970), (1497, 13170), (2195, 8982), (2495, 7902), (2634, 7485), (2994, 6585), (3951, 4990), (4390, 4491)]