20259440

素因数分解:

$2^4\times 5^1\times {\mathrm{253243}}^1$

素因数の和:253256

約数の個数: 20

約数和(自身を含む): 47103384

約数和(自身を除く): 26843944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 253243, 506486, 1012972, 1266215, 2025944, 2532430, 4051888, 5064860, 10129720, 20259440]

約数ペア:

[(1, 20259440), (2, 10129720), (4, 5064860), (5, 4051888), (8, 2532430), (10, 2025944), (16, 1266215), (20, 1012972), (40, 506486), (80, 253243)]