21053320

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{4919}}^1$

素因数の和:5037

約数の個数: 32

約数和(自身を含む): 47822400

約数和(自身を除く): 26769080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 4919, 9838, 19676, 24595, 39352, 49190, 98380, 196760, 526333, 1052666, 2105332, 2631665, 4210664, 5263330, 10526660, 21053320]

約数ペア:

[(1, 21053320), (2, 10526660), (4, 5263330), (5, 4210664), (8, 2631665), (10, 2105332), (20, 1052666), (40, 526333), (107, 196760), (214, 98380), (428, 49190), (535, 39352), (856, 24595), (1070, 19676), (2140, 9838), (4280, 4919)]