81663650

素因数分解:

$2^1\times 5^2\times {\mathrm{401}}^1\times {\mathrm{4073}}^1$

素因数の和:4486

約数の個数: 24

約数和(自身を含む): 152310564

約数和(自身を除く): 70646914

約数列:

[1, 2, 5, 10, 25, 50, 401, 802, 2005, 4010, 4073, 8146, 10025, 20050, 20365, 40730, 101825, 203650, 1633273, 3266546, 8166365, 16332730, 40831825, 81663650]

約数ペア:

[(1, 81663650), (2, 40831825), (5, 16332730), (10, 8166365), (25, 3266546), (50, 1633273), (401, 203650), (802, 101825), (2005, 40730), (4010, 20365), (4073, 20050), (8146, 10025)]