16887820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{269}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 36923040

約数和(自身を除く): 20035220

約数列:

[1, 2, 4, 5, 10, 20, 43, 73, 86, 146, 172, 215, 269, 292, 365, 430, 538, 730, 860, 1076, 1345, 1460, 2690, 3139, 5380, 6278, 11567, 12556, 15695, 19637, 23134, 31390, 39274, 46268, 57835, 62780, 78548, 98185, 115670, 196370, 231340, 392740, 844391, 1688782, 3377564, 4221955, 8443910, 16887820]

約数ペア:

[(1, 16887820), (2, 8443910), (4, 4221955), (5, 3377564), (10, 1688782), (20, 844391), (43, 392740), (73, 231340), (86, 196370), (146, 115670), (172, 98185), (215, 78548), (269, 62780), (292, 57835), (365, 46268), (430, 39274), (538, 31390), (730, 23134), (860, 19637), (1076, 15695), (1345, 12556), (1460, 11567), (2690, 6278), (3139, 5380)]