90666280

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61261}}^1$

素因数の和:61309

約数の個数: 32

約数和(自身を含む): 209516040

約数和(自身を除く): 118849760

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 61261, 122522, 245044, 306305, 490088, 612610, 1225220, 2266657, 2450440, 4533314, 9066628, 11333285, 18133256, 22666570, 45333140, 90666280]

約数ペア:

[(1, 90666280), (2, 45333140), (4, 22666570), (5, 18133256), (8, 11333285), (10, 9066628), (20, 4533314), (37, 2450440), (40, 2266657), (74, 1225220), (148, 612610), (185, 490088), (296, 306305), (370, 245044), (740, 122522), (1480, 61261)]