18311540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{70429}}^1$

素因数の和:70451

約数の個数: 24

約数和(自身を含む): 41412840

約数和(自身を除く): 23101300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 70429, 140858, 281716, 352145, 704290, 915577, 1408580, 1831154, 3662308, 4577885, 9155770, 18311540]

約数ペア:

[(1, 18311540), (2, 9155770), (4, 4577885), (5, 3662308), (10, 1831154), (13, 1408580), (20, 915577), (26, 704290), (52, 352145), (65, 281716), (130, 140858), (260, 70429)]