219079975

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{7561}}^1$

素因数の和:7651

約数の個数: 24

約数和(自身を含む): 290683280

約数和(自身を除く): 71603305

約数列:

[1, 5, 19, 25, 61, 95, 305, 475, 1159, 1525, 5795, 7561, 28975, 37805, 143659, 189025, 461221, 718295, 2306105, 3591475, 8763199, 11530525, 43815995, 219079975]

約数ペア:

[(1, 219079975), (5, 43815995), (19, 11530525), (25, 8763199), (61, 3591475), (95, 2306105), (305, 718295), (475, 461221), (1159, 189025), (1525, 143659), (5795, 37805), (7561, 28975)]