81506920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{185243}}^1$

素因数の和:185265

約数の個数: 32

約数和(自身を含む): 200063520

約数和(自身を除く): 118556600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 185243, 370486, 740972, 926215, 1481944, 1852430, 2037673, 3704860, 4075346, 7409720, 8150692, 10188365, 16301384, 20376730, 40753460, 81506920]

約数ペア:

[(1, 81506920), (2, 40753460), (4, 20376730), (5, 16301384), (8, 10188365), (10, 8150692), (11, 7409720), (20, 4075346), (22, 3704860), (40, 2037673), (44, 1852430), (55, 1481944), (88, 926215), (110, 740972), (220, 370486), (440, 185243)]