28661840

素因数分解:

$2^4\times 5^1\times {\mathrm{358273}}^1$

素因数の和:358286

約数の個数: 20

約数和(自身を含む): 66638964

約数和(自身を除く): 37977124

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 358273, 716546, 1433092, 1791365, 2866184, 3582730, 5732368, 7165460, 14330920, 28661840]

約数ペア:

[(1, 28661840), (2, 14330920), (4, 7165460), (5, 5732368), (8, 3582730), (10, 2866184), (16, 1791365), (20, 1433092), (40, 716546), (80, 358273)]