258128

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1$

素因数の和:111

約数の個数: 40

約数和(自身を含む): 578088

約数和(自身を除く): 319960

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 73, 104, 136, 146, 208, 221, 272, 292, 442, 584, 884, 949, 1168, 1241, 1768, 1898, 2482, 3536, 3796, 4964, 7592, 9928, 15184, 16133, 19856, 32266, 64532, 129064, 258128]

約数ペア:

[(1, 258128), (2, 129064), (4, 64532), (8, 32266), (13, 19856), (16, 16133), (17, 15184), (26, 9928), (34, 7592), (52, 4964), (68, 3796), (73, 3536), (104, 2482), (136, 1898), (146, 1768), (208, 1241), (221, 1168), (272, 949), (292, 884), (442, 584)]