21462040

素因数分解:

$2^3\times 5^1\times {\mathrm{331}}^1\times {\mathrm{1621}}^1$

素因数の和:1963

約数の個数: 32

約数和(自身を含む): 48465360

約数和(自身を除く): 27003320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 331, 662, 1324, 1621, 1655, 2648, 3242, 3310, 6484, 6620, 8105, 12968, 13240, 16210, 32420, 64840, 536551, 1073102, 2146204, 2682755, 4292408, 5365510, 10731020, 21462040]

約数ペア:

[(1, 21462040), (2, 10731020), (4, 5365510), (5, 4292408), (8, 2682755), (10, 2146204), (20, 1073102), (40, 536551), (331, 64840), (662, 32420), (1324, 16210), (1621, 13240), (1655, 12968), (2648, 8105), (3242, 6620), (3310, 6484)]