21785806

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{383}}^1$

素因数の和:648

約数の個数: 32

約数和(自身を含む): 39813120

約数和(自身を除く): 18027314

約数列:

[1, 2, 7, 14, 17, 34, 119, 238, 239, 383, 478, 766, 1673, 2681, 3346, 4063, 5362, 6511, 8126, 13022, 28441, 45577, 56882, 91154, 91537, 183074, 640759, 1281518, 1556129, 3112258, 10892903, 21785806]

約数ペア:

[(1, 21785806), (2, 10892903), (7, 3112258), (14, 1556129), (17, 1281518), (34, 640759), (119, 183074), (238, 91537), (239, 91154), (383, 56882), (478, 45577), (766, 28441), (1673, 13022), (2681, 8126), (3346, 6511), (4063, 5362)]