216940420

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{130687}}^1$

素因数の和:130779

約数の個数: 24

約数和(自身を含む): 461067264

約数和(自身を除く): 244126844

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 130687, 261374, 522748, 653435, 1306870, 2613740, 10847021, 21694042, 43388084, 54235105, 108470210, 216940420]

約数ペア:

[(1, 216940420), (2, 108470210), (4, 54235105), (5, 43388084), (10, 21694042), (20, 10847021), (83, 2613740), (166, 1306870), (332, 653435), (415, 522748), (830, 261374), (1660, 130687)]