1215193721

素因数分解:

$7^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{21757}}^1$

素因数の和:21944

約数の個数: 16

約数和(自身を含む): 1420362240

約数和(自身を除く): 205168519

約数列:

[1, 7, 79, 101, 553, 707, 7979, 21757, 55853, 152299, 1718803, 2197457, 12031621, 15382199, 173599103, 1215193721]

約数ペア:

[(1, 1215193721), (7, 173599103), (79, 15382199), (101, 12031621), (553, 2197457), (707, 1718803), (7979, 152299), (21757, 55853)]