40428820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^2\times {\mathrm{401}}^1$

素因数の和:552

約数の個数: 36

約数和(自身を含む): 86327892

約数和(自身を除く): 45899072

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 401, 710, 802, 1420, 1604, 2005, 4010, 5041, 8020, 10082, 20164, 25205, 28471, 50410, 56942, 100820, 113884, 142355, 284710, 569420, 2021441, 4042882, 8085764, 10107205, 20214410, 40428820]

約数ペア:

[(1, 40428820), (2, 20214410), (4, 10107205), (5, 8085764), (10, 4042882), (20, 2021441), (71, 569420), (142, 284710), (284, 142355), (355, 113884), (401, 100820), (710, 56942), (802, 50410), (1420, 28471), (1604, 25205), (2005, 20164), (4010, 10082), (5041, 8020)]