649804520

素因数分解:

$2^3\times 5^1\times {\mathrm{613}}^1\times {\mathrm{26501}}^1$

素因数の和:27125

約数の個数: 32

約数和(自身を含む): 1464500520

約数和(自身を除く): 814696000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 613, 1226, 2452, 3065, 4904, 6130, 12260, 24520, 26501, 53002, 106004, 132505, 212008, 265010, 530020, 1060040, 16245113, 32490226, 64980452, 81225565, 129960904, 162451130, 324902260, 649804520]

約数ペア:

[(1, 649804520), (2, 324902260), (4, 162451130), (5, 129960904), (8, 81225565), (10, 64980452), (20, 32490226), (40, 16245113), (613, 1060040), (1226, 530020), (2452, 265010), (3065, 212008), (4904, 132505), (6130, 106004), (12260, 53002), (24520, 26501)]