21007020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{12073}}^1$

素因数の和:12114

約数の個数: 48

約数和(自身を含む): 60852960

約数和(自身を除く): 39845940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 58, 60, 87, 116, 145, 174, 290, 348, 435, 580, 870, 1740, 12073, 24146, 36219, 48292, 60365, 72438, 120730, 144876, 181095, 241460, 350117, 362190, 700234, 724380, 1050351, 1400468, 1750585, 2100702, 3501170, 4201404, 5251755, 7002340, 10503510, 21007020]

約数ペア:

[(1, 21007020), (2, 10503510), (3, 7002340), (4, 5251755), (5, 4201404), (6, 3501170), (10, 2100702), (12, 1750585), (15, 1400468), (20, 1050351), (29, 724380), (30, 700234), (58, 362190), (60, 350117), (87, 241460), (116, 181095), (145, 144876), (174, 120730), (290, 72438), (348, 60365), (435, 48292), (580, 36219), (870, 24146), (1740, 12073)]