16191920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{6529}}^1$

素因数の和:6573

約数の個数: 40

約数和(自身を含む): 38866560

約数和(自身を除く): 22674640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 6529, 13058, 26116, 32645, 52232, 65290, 104464, 130580, 202399, 261160, 404798, 522320, 809596, 1011995, 1619192, 2023990, 3238384, 4047980, 8095960, 16191920]

約数ペア:

[(1, 16191920), (2, 8095960), (4, 4047980), (5, 3238384), (8, 2023990), (10, 1619192), (16, 1011995), (20, 809596), (31, 522320), (40, 404798), (62, 261160), (80, 202399), (124, 130580), (155, 104464), (248, 65290), (310, 52232), (496, 32645), (620, 26116), (1240, 13058), (2480, 6529)]