28213960

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{3163}}^1$

素因数の和:3397

約数の個数: 32

約数和(自身を含む): 63786240

約数和(自身を除く): 35572280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 3163, 4460, 6326, 8920, 12652, 15815, 25304, 31630, 63260, 126520, 705349, 1410698, 2821396, 3526745, 5642792, 7053490, 14106980, 28213960]

約数ペア:

[(1, 28213960), (2, 14106980), (4, 7053490), (5, 5642792), (8, 3526745), (10, 2821396), (20, 1410698), (40, 705349), (223, 126520), (446, 63260), (892, 31630), (1115, 25304), (1784, 15815), (2230, 12652), (3163, 8920), (4460, 6326)]