261013040

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{45953}}^1$

素因数の和:46037

約数の個数: 40

約数和(自身を含む): 615415968

約数和(自身を除く): 354402928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 45953, 91906, 183812, 229765, 367624, 459530, 735248, 919060, 1838120, 3262663, 3676240, 6525326, 13050652, 16313315, 26101304, 32626630, 52202608, 65253260, 130506520, 261013040]

約数ペア:

[(1, 261013040), (2, 130506520), (4, 65253260), (5, 52202608), (8, 32626630), (10, 26101304), (16, 16313315), (20, 13050652), (40, 6525326), (71, 3676240), (80, 3262663), (142, 1838120), (284, 919060), (355, 735248), (568, 459530), (710, 367624), (1136, 229765), (1420, 183812), (2840, 91906), (5680, 45953)]