222780025

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{787}}^1$

素因数の和:890

約数の個数: 36

約数和(自身を含む): 303982032

約数和(自身を除く): 81202007

約数列:

[1, 5, 13, 25, 65, 67, 169, 325, 335, 787, 845, 871, 1675, 3935, 4225, 4355, 10231, 11323, 19675, 21775, 51155, 52729, 56615, 133003, 255775, 263645, 283075, 665015, 685477, 1318225, 3325075, 3427385, 8911201, 17136925, 44556005, 222780025]

約数ペア:

[(1, 222780025), (5, 44556005), (13, 17136925), (25, 8911201), (65, 3427385), (67, 3325075), (169, 1318225), (325, 685477), (335, 665015), (787, 283075), (845, 263645), (871, 255775), (1675, 133003), (3935, 56615), (4225, 52729), (4355, 51155), (10231, 21775), (11323, 19675)]