81021460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{7247}}^1$

素因数の和:7312

約数の個数: 48

約数和(自身を含む): 187520256

約数和(自身を除く): 106498796

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 172, 215, 260, 430, 559, 860, 1118, 2236, 2795, 5590, 7247, 11180, 14494, 28988, 36235, 72470, 94211, 144940, 188422, 311621, 376844, 471055, 623242, 942110, 1246484, 1558105, 1884220, 3116210, 4051073, 6232420, 8102146, 16204292, 20255365, 40510730, 81021460]

約数ペア:

[(1, 81021460), (2, 40510730), (4, 20255365), (5, 16204292), (10, 8102146), (13, 6232420), (20, 4051073), (26, 3116210), (43, 1884220), (52, 1558105), (65, 1246484), (86, 942110), (130, 623242), (172, 471055), (215, 376844), (260, 311621), (430, 188422), (559, 144940), (860, 94211), (1118, 72470), (2236, 36235), (2795, 28988), (5590, 14494), (7247, 11180)]