81698720

素因数分解:

$2^5\times 5^1\times {\mathrm{510617}}^1$

素因数の和:510632

約数の個数: 24

約数和(自身を含む): 193013604

約数和(自身を除く): 111314884

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 510617, 1021234, 2042468, 2553085, 4084936, 5106170, 8169872, 10212340, 16339744, 20424680, 40849360, 81698720]

約数ペア:

[(1, 81698720), (2, 40849360), (4, 20424680), (5, 16339744), (8, 10212340), (10, 8169872), (16, 5106170), (20, 4084936), (32, 2553085), (40, 2042468), (80, 1021234), (160, 510617)]