28293460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108821}}^1$

素因数の和:108843

約数の個数: 24

約数和(自身を含む): 63987336

約数和(自身を除く): 35693876

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 108821, 217642, 435284, 544105, 1088210, 1414673, 2176420, 2829346, 5658692, 7073365, 14146730, 28293460]

約数ペア:

[(1, 28293460), (2, 14146730), (4, 7073365), (5, 5658692), (10, 2829346), (13, 2176420), (20, 1414673), (26, 1088210), (52, 544105), (65, 435284), (130, 217642), (260, 108821)]