20916430

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1\times {\mathrm{431}}^1$

素因数の和:672

約数の個数: 32

約数和(自身を含む): 39564288

約数和(自身を除く): 18647858

約数列:

[1, 2, 5, 10, 23, 46, 115, 211, 230, 422, 431, 862, 1055, 2110, 2155, 4310, 4853, 9706, 9913, 19826, 24265, 48530, 49565, 90941, 99130, 181882, 454705, 909410, 2091643, 4183286, 10458215, 20916430]

約数ペア:

[(1, 20916430), (2, 10458215), (5, 4183286), (10, 2091643), (23, 909410), (46, 454705), (115, 181882), (211, 99130), (230, 90941), (422, 49565), (431, 48530), (862, 24265), (1055, 19826), (2110, 9913), (2155, 9706), (4310, 4853)]