81277160

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{54917}}^1$

素因数の和:54965

約数の個数: 32

約数和(自身を含む): 187819560

約数和(自身を除く): 106542400

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 54917, 109834, 219668, 274585, 439336, 549170, 1098340, 2031929, 2196680, 4063858, 8127716, 10159645, 16255432, 20319290, 40638580, 81277160]

約数ペア:

[(1, 81277160), (2, 40638580), (4, 20319290), (5, 16255432), (8, 10159645), (10, 8127716), (20, 4063858), (37, 2196680), (40, 2031929), (74, 1098340), (148, 549170), (185, 439336), (296, 274585), (370, 219668), (740, 109834), (1480, 54917)]