20312615

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:227

約数の個数: 32

約数和(自身を含む): 27172800

約数和(自身を除く): 6860185

約数列:

[1, 5, 19, 29, 73, 95, 101, 145, 365, 505, 551, 1387, 1919, 2117, 2755, 2929, 6935, 7373, 9595, 10585, 14645, 36865, 40223, 55651, 140087, 201115, 213817, 278255, 700435, 1069085, 4062523, 20312615]

約数ペア:

[(1, 20312615), (5, 4062523), (19, 1069085), (29, 700435), (73, 278255), (95, 213817), (101, 201115), (145, 140087), (365, 55651), (505, 40223), (551, 36865), (1387, 14645), (1919, 10585), (2117, 9595), (2755, 7373), (2929, 6935)]