20547760

素因数分解:

$2^4\times 5^1\times {\mathrm{419}}^1\times {\mathrm{613}}^1$

素因数の和:1045

約数の個数: 40

約数和(自身を含む): 47965680

約数和(自身を除く): 27417920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 419, 613, 838, 1226, 1676, 2095, 2452, 3065, 3352, 4190, 4904, 6130, 6704, 8380, 9808, 12260, 16760, 24520, 33520, 49040, 256847, 513694, 1027388, 1284235, 2054776, 2568470, 4109552, 5136940, 10273880, 20547760]

約数ペア:

[(1, 20547760), (2, 10273880), (4, 5136940), (5, 4109552), (8, 2568470), (10, 2054776), (16, 1284235), (20, 1027388), (40, 513694), (80, 256847), (419, 49040), (613, 33520), (838, 24520), (1226, 16760), (1676, 12260), (2095, 9808), (2452, 8380), (3065, 6704), (3352, 6130), (4190, 4904)]