25030220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{331}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 55776000

約数和(自身を除く): 30745780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 199, 331, 380, 398, 662, 796, 995, 1324, 1655, 1990, 3310, 3781, 3980, 6289, 6620, 7562, 12578, 15124, 18905, 25156, 31445, 37810, 62890, 65869, 75620, 125780, 131738, 263476, 329345, 658690, 1251511, 1317380, 2503022, 5006044, 6257555, 12515110, 25030220]

約数ペア:

[(1, 25030220), (2, 12515110), (4, 6257555), (5, 5006044), (10, 2503022), (19, 1317380), (20, 1251511), (38, 658690), (76, 329345), (95, 263476), (190, 131738), (199, 125780), (331, 75620), (380, 65869), (398, 62890), (662, 37810), (796, 31445), (995, 25156), (1324, 18905), (1655, 15124), (1990, 12578), (3310, 7562), (3781, 6620), (3980, 6289)]