64380880

素因数分解:

$2^4\times 5^1\times {\mathrm{804761}}^1$

素因数の和:804774

約数の個数: 20

約数和(自身を含む): 149685732

約数和(自身を除く): 85304852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 804761, 1609522, 3219044, 4023805, 6438088, 8047610, 12876176, 16095220, 32190440, 64380880]

約数ペア:

[(1, 64380880), (2, 32190440), (4, 16095220), (5, 12876176), (8, 8047610), (10, 6438088), (16, 4023805), (20, 3219044), (40, 1609522), (80, 804761)]