20002580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{719}}^1$

素因数の和:848

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 25720300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 107, 130, 214, 260, 428, 535, 719, 1070, 1391, 1438, 2140, 2782, 2876, 3595, 5564, 6955, 7190, 9347, 13910, 14380, 18694, 27820, 37388, 46735, 76933, 93470, 153866, 186940, 307732, 384665, 769330, 1000129, 1538660, 2000258, 4000516, 5000645, 10001290, 20002580]

約数ペア:

[(1, 20002580), (2, 10001290), (4, 5000645), (5, 4000516), (10, 2000258), (13, 1538660), (20, 1000129), (26, 769330), (52, 384665), (65, 307732), (107, 186940), (130, 153866), (214, 93470), (260, 76933), (428, 46735), (535, 37388), (719, 27820), (1070, 18694), (1391, 14380), (1438, 13910), (2140, 9347), (2782, 7190), (2876, 6955), (3595, 5564)]