21768760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41863}}^1$

素因数の和:41887

約数の個数: 32

約数和(自身を含む): 52748640

約数和(自身を除く): 30979880

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41863, 83726, 167452, 209315, 334904, 418630, 544219, 837260, 1088438, 1674520, 2176876, 2721095, 4353752, 5442190, 10884380, 21768760]

約数ペア:

[(1, 21768760), (2, 10884380), (4, 5442190), (5, 4353752), (8, 2721095), (10, 2176876), (13, 1674520), (20, 1088438), (26, 837260), (40, 544219), (52, 418630), (65, 334904), (104, 209315), (130, 167452), (260, 83726), (520, 41863)]