1221719125

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{787}}^1\times {\mathrm{1129}}^1$

素因数の和:1942

約数の個数: 32

約数和(自身を含む): 1666903680

約数和(自身を除く): 445184555

約数列:

[1, 5, 11, 25, 55, 125, 275, 787, 1129, 1375, 3935, 5645, 8657, 12419, 19675, 28225, 43285, 62095, 98375, 141125, 216425, 310475, 888523, 1082125, 1552375, 4442615, 9773753, 22213075, 48868765, 111065375, 244343825, 1221719125]

約数ペア:

[(1, 1221719125), (5, 244343825), (11, 111065375), (25, 48868765), (55, 22213075), (125, 9773753), (275, 4442615), (787, 1552375), (1129, 1082125), (1375, 888523), (3935, 310475), (5645, 216425), (8657, 141125), (12419, 98375), (19675, 62095), (28225, 43285)]