20123355

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4457}}^1$

素因数の和:4515

約数の個数: 32

約数和(自身を含む): 37661184

約数和(自身を除く): 17537829

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 105, 129, 215, 301, 645, 903, 1505, 4457, 4515, 13371, 22285, 31199, 66855, 93597, 155995, 191651, 467985, 574953, 958255, 1341557, 2874765, 4024671, 6707785, 20123355]

約数ペア:

[(1, 20123355), (3, 6707785), (5, 4024671), (7, 2874765), (15, 1341557), (21, 958255), (35, 574953), (43, 467985), (105, 191651), (129, 155995), (215, 93597), (301, 66855), (645, 31199), (903, 22285), (1505, 13371), (4457, 4515)]