278340621

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{1481}}^1$

素因数の和:1637

約数の個数: 32

約数和(自身を含む): 411640320

約数和(自身を除く): 133299699

約数列:

[1, 3, 13, 39, 61, 79, 183, 237, 793, 1027, 1481, 2379, 3081, 4443, 4819, 14457, 19253, 57759, 62647, 90341, 116999, 187941, 271023, 350997, 1174433, 1520987, 3523299, 4562961, 7136939, 21410817, 92780207, 278340621]

約数ペア:

[(1, 278340621), (3, 92780207), (13, 21410817), (39, 7136939), (61, 4562961), (79, 3523299), (183, 1520987), (237, 1174433), (793, 350997), (1027, 271023), (1481, 187941), (2379, 116999), (3081, 90341), (4443, 62647), (4819, 57759), (14457, 19253)]