81824920

素因数分解:

$2^3\times 5^1\times {\mathrm{983}}^1\times {\mathrm{2081}}^1$

素因数の和:3075

約数の個数: 32

約数和(自身を含む): 184381920

約数和(自身を除く): 102557000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 983, 1966, 2081, 3932, 4162, 4915, 7864, 8324, 9830, 10405, 16648, 19660, 20810, 39320, 41620, 83240, 2045623, 4091246, 8182492, 10228115, 16364984, 20456230, 40912460, 81824920]

約数ペア:

[(1, 81824920), (2, 40912460), (4, 20456230), (5, 16364984), (8, 10228115), (10, 8182492), (20, 4091246), (40, 2045623), (983, 83240), (1966, 41620), (2081, 39320), (3932, 20810), (4162, 19660), (4915, 16648), (7864, 10405), (8324, 9830)]