417950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{643}}^1$

素因数の和:668

約数の個数: 24

約数和(自身を含む): 838488

約数和(自身を除く): 420538

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 643, 650, 1286, 3215, 6430, 8359, 16075, 16718, 32150, 41795, 83590, 208975, 417950]

約数ペア:

[(1, 417950), (2, 208975), (5, 83590), (10, 41795), (13, 32150), (25, 16718), (26, 16075), (50, 8359), (65, 6430), (130, 3215), (325, 1286), (643, 650)]