19561880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37619}}^1$

素因数の和:37643

約数の個数: 32

約数和(自身を含む): 47401200

約数和(自身を除く): 27839320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 37619, 75238, 150476, 188095, 300952, 376190, 489047, 752380, 978094, 1504760, 1956188, 2445235, 3912376, 4890470, 9780940, 19561880]

約数ペア:

[(1, 19561880), (2, 9780940), (4, 4890470), (5, 3912376), (8, 2445235), (10, 1956188), (13, 1504760), (20, 978094), (26, 752380), (40, 489047), (52, 376190), (65, 300952), (104, 188095), (130, 150476), (260, 75238), (520, 37619)]