19987115

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{151}}^1\times {\mathrm{1151}}^1$

素因数の和:1330

約数の個数: 16

約数和(自身を含む): 25214976

約数和(自身を除く): 5227861

約数列:

[1, 5, 23, 115, 151, 755, 1151, 3473, 5755, 17365, 26473, 132365, 173801, 869005, 3997423, 19987115]

約数ペア:

[(1, 19987115), (5, 3997423), (23, 869005), (115, 173801), (151, 132365), (755, 26473), (1151, 17365), (3473, 5755)]