261962896

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{40627}}^1$

素因数の和:40679

約数の個数: 40

約数和(自身を含む): 564241664

約数和(自身を除く): 302278768

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 806, 1612, 3224, 6448, 40627, 81254, 162508, 325016, 528151, 650032, 1056302, 1259437, 2112604, 2518874, 4225208, 5037748, 8450416, 10075496, 16372681, 20150992, 32745362, 65490724, 130981448, 261962896]

約数ペア:

[(1, 261962896), (2, 130981448), (4, 65490724), (8, 32745362), (13, 20150992), (16, 16372681), (26, 10075496), (31, 8450416), (52, 5037748), (62, 4225208), (104, 2518874), (124, 2112604), (208, 1259437), (248, 1056302), (403, 650032), (496, 528151), (806, 325016), (1612, 162508), (3224, 81254), (6448, 40627)]