19881790

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{269}}^1\times {\mathrm{389}}^1$

素因数の和:684

約数の個数: 32

約数和(自身を含む): 37908000

約数和(自身を除く): 18026210

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 269, 389, 538, 778, 1345, 1945, 2690, 3890, 5111, 7391, 10222, 14782, 25555, 36955, 51110, 73910, 104641, 209282, 523205, 1046410, 1988179, 3976358, 9940895, 19881790]

約数ペア:

[(1, 19881790), (2, 9940895), (5, 3976358), (10, 1988179), (19, 1046410), (38, 523205), (95, 209282), (190, 104641), (269, 73910), (389, 51110), (538, 36955), (778, 25555), (1345, 14782), (1945, 10222), (2690, 7391), (3890, 5111)]