256366929

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{11887}}^1$

素因数の和:11989

約数の個数: 32

約数和(自身を含む): 426065920

約数和(自身を除く): 169698991

約数列:

[1, 3, 7, 13, 21, 39, 79, 91, 237, 273, 553, 1027, 1659, 3081, 7189, 11887, 21567, 35661, 83209, 154531, 249627, 463593, 939073, 1081717, 2817219, 3245151, 6573511, 12207949, 19720533, 36623847, 85455643, 256366929]

約数ペア:

[(1, 256366929), (3, 85455643), (7, 36623847), (13, 19720533), (21, 12207949), (39, 6573511), (79, 3245151), (91, 2817219), (237, 1081717), (273, 939073), (553, 463593), (1027, 249627), (1659, 154531), (3081, 83209), (7189, 35661), (11887, 21567)]