128772021

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{149561}}^1$

素因数の和:149612

約数の個数: 16

約数和(自身を含む): 201011328

約数和(自身を除く): 72239307

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 149561, 448683, 1046927, 3140781, 6132001, 18396003, 42924007, 128772021]

約数ペア:

[(1, 128772021), (3, 42924007), (7, 18396003), (21, 6132001), (41, 3140781), (123, 1046927), (287, 448683), (861, 149561)]