19151920

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{5839}}^1$

素因数の和:5893

約数の個数: 40

約数和(自身を含む): 45622080

約数和(自身を除く): 26470160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 5839, 11678, 23356, 29195, 46712, 58390, 93424, 116780, 233560, 239399, 467120, 478798, 957596, 1196995, 1915192, 2393990, 3830384, 4787980, 9575960, 19151920]

約数ペア:

[(1, 19151920), (2, 9575960), (4, 4787980), (5, 3830384), (8, 2393990), (10, 1915192), (16, 1196995), (20, 957596), (40, 478798), (41, 467120), (80, 239399), (82, 233560), (164, 116780), (205, 93424), (328, 58390), (410, 46712), (656, 29195), (820, 23356), (1640, 11678), (3280, 5839)]