19383325

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:158

約数の個数: 48

約数和(自身を含む): 28262080

約数和(自身を除く): 8878755

約数列:

[1, 5, 13, 19, 25, 43, 65, 73, 95, 215, 247, 325, 365, 475, 559, 817, 949, 1075, 1235, 1387, 1825, 2795, 3139, 4085, 4745, 6175, 6935, 10621, 13975, 15695, 18031, 20425, 23725, 34675, 40807, 53105, 59641, 78475, 90155, 204035, 265525, 298205, 450775, 775333, 1020175, 1491025, 3876665, 19383325]

約数ペア:

[(1, 19383325), (5, 3876665), (13, 1491025), (19, 1020175), (25, 775333), (43, 450775), (65, 298205), (73, 265525), (95, 204035), (215, 90155), (247, 78475), (325, 59641), (365, 53105), (475, 40807), (559, 34675), (817, 23725), (949, 20425), (1075, 18031), (1235, 15695), (1387, 13975), (1825, 10621), (2795, 6935), (3139, 6175), (4085, 4745)]