18839140

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13267}}^1$

素因数の和:13347

約数の個数: 24

約数和(自身を含む): 40122432

約数和(自身を除く): 21283292

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13267, 26534, 53068, 66335, 132670, 265340, 941957, 1883914, 3767828, 4709785, 9419570, 18839140]

約数ペア:

[(1, 18839140), (2, 9419570), (4, 4709785), (5, 3767828), (10, 1883914), (20, 941957), (71, 265340), (142, 132670), (284, 66335), (355, 53068), (710, 26534), (1420, 13267)]