16811920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{6779}}^1$

素因数の和:6823

約数の個数: 40

約数和(自身を含む): 40354560

約数和(自身を除く): 23542640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 6779, 13558, 27116, 33895, 54232, 67790, 108464, 135580, 210149, 271160, 420298, 542320, 840596, 1050745, 1681192, 2101490, 3362384, 4202980, 8405960, 16811920]

約数ペア:

[(1, 16811920), (2, 8405960), (4, 4202980), (5, 3362384), (8, 2101490), (10, 1681192), (16, 1050745), (20, 840596), (31, 542320), (40, 420298), (62, 271160), (80, 210149), (124, 135580), (155, 108464), (248, 67790), (310, 54232), (496, 33895), (620, 27116), (1240, 13558), (2480, 6779)]