20008505

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{15817}}^1$

素因数の和:15856

約数の個数: 16

約数和(自身を含む): 27333504

約数和(自身を除く): 7324999

約数列:

[1, 5, 11, 23, 55, 115, 253, 1265, 15817, 79085, 173987, 363791, 869935, 1818955, 4001701, 20008505]

約数ペア:

[(1, 20008505), (5, 4001701), (11, 1818955), (23, 869935), (55, 363791), (115, 173987), (253, 79085), (1265, 15817)]