256471826

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{6991}}^1$

素因数の和:7106

約数の個数: 32

約数和(自身を含む): 444019968

約数和(自身を除く): 187548142

約数列:

[1, 2, 13, 17, 26, 34, 83, 166, 221, 442, 1079, 1411, 2158, 2822, 6991, 13982, 18343, 36686, 90883, 118847, 181766, 237694, 580253, 1160506, 1545011, 3090022, 7543289, 9864301, 15086578, 19728602, 128235913, 256471826]

約数ペア:

[(1, 256471826), (2, 128235913), (13, 19728602), (17, 15086578), (26, 9864301), (34, 7543289), (83, 3090022), (166, 1545011), (221, 1160506), (442, 580253), (1079, 237694), (1411, 181766), (2158, 118847), (2822, 90883), (6991, 36686), (13982, 18343)]