19641880

素因数分解:

$2^3\times 5^1\times {\mathrm{569}}^1\times {\mathrm{863}}^1$

素因数の和:1443

約数の個数: 32

約数和(自身を含む): 44323200

約数和(自身を除く): 24681320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 569, 863, 1138, 1726, 2276, 2845, 3452, 4315, 4552, 5690, 6904, 8630, 11380, 17260, 22760, 34520, 491047, 982094, 1964188, 2455235, 3928376, 4910470, 9820940, 19641880]

約数ペア:

[(1, 19641880), (2, 9820940), (4, 4910470), (5, 3928376), (8, 2455235), (10, 1964188), (20, 982094), (40, 491047), (569, 34520), (863, 22760), (1138, 17260), (1726, 11380), (2276, 8630), (2845, 6904), (3452, 5690), (4315, 4552)]