201667977

素因数分解:

$3^2\times 7^2\times {\mathrm{557}}^1\times {\mathrm{821}}^1$

素因数の和:1398

約数の個数: 36

約数和(自身を含む): 339878916

約数和(自身を除く): 138210939

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 557, 821, 1671, 2463, 3899, 5013, 5747, 7389, 11697, 17241, 27293, 35091, 40229, 51723, 81879, 120687, 245637, 362061, 457297, 1371891, 3201079, 4115673, 9603237, 22407553, 28809711, 67222659, 201667977]

約数ペア:

[(1, 201667977), (3, 67222659), (7, 28809711), (9, 22407553), (21, 9603237), (49, 4115673), (63, 3201079), (147, 1371891), (441, 457297), (557, 362061), (821, 245637), (1671, 120687), (2463, 81879), (3899, 51723), (5013, 40229), (5747, 35091), (7389, 27293), (11697, 17241)]