21643284

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{138739}}^1$

素因数の和:138759

約数の個数: 24

約数和(自身を含む): 54386080

約数和(自身を除く): 32742796

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 138739, 277478, 416217, 554956, 832434, 1664868, 1803607, 3607214, 5410821, 7214428, 10821642, 21643284]

約数ペア:

[(1, 21643284), (2, 10821642), (3, 7214428), (4, 5410821), (6, 3607214), (12, 1803607), (13, 1664868), (26, 832434), (39, 554956), (52, 416217), (78, 277478), (156, 138739)]