21369790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1847}}^1$

素因数の和:1956

約数の個数: 32

約数和(自身を含む): 41912640

約数和(自身を除く): 20542850

約数列:

[1, 2, 5, 10, 13, 26, 65, 89, 130, 178, 445, 890, 1157, 1847, 2314, 3694, 5785, 9235, 11570, 18470, 24011, 48022, 120055, 164383, 240110, 328766, 821915, 1643830, 2136979, 4273958, 10684895, 21369790]

約数ペア:

[(1, 21369790), (2, 10684895), (5, 4273958), (10, 2136979), (13, 1643830), (26, 821915), (65, 328766), (89, 240110), (130, 164383), (178, 120055), (445, 48022), (890, 24011), (1157, 18470), (1847, 11570), (2314, 9235), (3694, 5785)]