647270

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{383}}^1$

素因数の和:416

約数の個数: 24

約数和(自身を含む): 1264896

約数和(自身を除く): 617626

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 383, 766, 845, 1690, 1915, 3830, 4979, 9958, 24895, 49790, 64727, 129454, 323635, 647270]

約数ペア:

[(1, 647270), (2, 323635), (5, 129454), (10, 64727), (13, 49790), (26, 24895), (65, 9958), (130, 4979), (169, 3830), (338, 1915), (383, 1690), (766, 845)]