261645550

素因数分解:

$2^1\times 5^2\times {\mathrm{101}}^1\times {\mathrm{197}}^1\times {\mathrm{263}}^1$

素因数の和:573

約数の個数: 48

約数和(自身を含む): 495852192

約数和(自身を除く): 234206642

約数列:

[1, 2, 5, 10, 25, 50, 101, 197, 202, 263, 394, 505, 526, 985, 1010, 1315, 1970, 2525, 2630, 4925, 5050, 6575, 9850, 13150, 19897, 26563, 39794, 51811, 53126, 99485, 103622, 132815, 198970, 259055, 265630, 497425, 518110, 664075, 994850, 1295275, 1328150, 2590550, 5232911, 10465822, 26164555, 52329110, 130822775, 261645550]

約数ペア:

[(1, 261645550), (2, 130822775), (5, 52329110), (10, 26164555), (25, 10465822), (50, 5232911), (101, 2590550), (197, 1328150), (202, 1295275), (263, 994850), (394, 664075), (505, 518110), (526, 497425), (985, 265630), (1010, 259055), (1315, 198970), (1970, 132815), (2525, 103622), (2630, 99485), (4925, 53126), (5050, 51811), (6575, 39794), (9850, 26563), (13150, 19897)]