21412810

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1\times {\mathrm{449}}^1$

素因数の和:726

約数の個数: 32

約数和(自身を含む): 40824000

約数和(自身を除く): 19411190

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 251, 449, 502, 898, 1255, 2245, 2510, 4490, 4769, 8531, 9538, 17062, 23845, 42655, 47690, 85310, 112699, 225398, 563495, 1126990, 2141281, 4282562, 10706405, 21412810]

約数ペア:

[(1, 21412810), (2, 10706405), (5, 4282562), (10, 2141281), (19, 1126990), (38, 563495), (95, 225398), (190, 112699), (251, 85310), (449, 47690), (502, 42655), (898, 23845), (1255, 17062), (2245, 9538), (2510, 8531), (4490, 4769)]