65109680

素因数分解:

$2^4\times 5^1\times {\mathrm{813871}}^1$

素因数の和:813884

約数の個数: 20

約数和(自身を含む): 151380192

約数和(自身を除く): 86270512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 813871, 1627742, 3255484, 4069355, 6510968, 8138710, 13021936, 16277420, 32554840, 65109680]

約数ペア:

[(1, 65109680), (2, 32554840), (4, 16277420), (5, 13021936), (8, 8138710), (10, 6510968), (16, 4069355), (20, 3255484), (40, 1627742), (80, 813871)]