1221415

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:103

約数の個数: 32

約数和(自身を含む): 1774080

約数和(自身を除く): 552665

約数列:

[1, 5, 13, 19, 23, 43, 65, 95, 115, 215, 247, 299, 437, 559, 817, 989, 1235, 1495, 2185, 2795, 4085, 4945, 5681, 10621, 12857, 18791, 28405, 53105, 64285, 93955, 244283, 1221415]

約数ペア:

[(1, 1221415), (5, 244283), (13, 93955), (19, 64285), (23, 53105), (43, 28405), (65, 18791), (95, 12857), (115, 10621), (215, 5681), (247, 4945), (299, 4085), (437, 2795), (559, 2185), (817, 1495), (989, 1235)]