21247818

素因数分解:

$2^1\times 3^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1\times {\mathrm{349}}^1$

素因数の和:566

約数の個数: 32

約数和(自身を含む): 43512000

約数和(自身を除く): 22264182

約数列:

[1, 2, 3, 6, 73, 139, 146, 219, 278, 349, 417, 438, 698, 834, 1047, 2094, 10147, 20294, 25477, 30441, 48511, 50954, 60882, 76431, 97022, 145533, 152862, 291066, 3541303, 7082606, 10623909, 21247818]

約数ペア:

[(1, 21247818), (2, 10623909), (3, 7082606), (6, 3541303), (73, 291066), (139, 152862), (146, 145533), (219, 97022), (278, 76431), (349, 60882), (417, 50954), (438, 48511), (698, 30441), (834, 25477), (1047, 20294), (2094, 10147)]