256104920

素因数分解:

$2^3\times 5^1\times {\mathrm{571}}^1\times {\mathrm{11213}}^1$

素因数の和:11795

約数の個数: 32

約数和(自身を含む): 577296720

約数和(自身を除く): 321191800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 571, 1142, 2284, 2855, 4568, 5710, 11213, 11420, 22426, 22840, 44852, 56065, 89704, 112130, 224260, 448520, 6402623, 12805246, 25610492, 32013115, 51220984, 64026230, 128052460, 256104920]

約数ペア:

[(1, 256104920), (2, 128052460), (4, 64026230), (5, 51220984), (8, 32013115), (10, 25610492), (20, 12805246), (40, 6402623), (571, 448520), (1142, 224260), (2284, 112130), (2855, 89704), (4568, 56065), (5710, 44852), (11213, 22840), (11420, 22426)]