18784678

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{491}}^1$

素因数の和:588

約数の個数: 32

約数和(自身を含む): 32306688

約数和(自身を除く): 13522010

約数列:

[1, 2, 11, 22, 37, 47, 74, 94, 407, 491, 517, 814, 982, 1034, 1739, 3478, 5401, 10802, 18167, 19129, 23077, 36334, 38258, 46154, 199837, 253847, 399674, 507694, 853849, 1707698, 9392339, 18784678]

約数ペア:

[(1, 18784678), (2, 9392339), (11, 1707698), (22, 853849), (37, 507694), (47, 399674), (74, 253847), (94, 199837), (407, 46154), (491, 38258), (517, 36334), (814, 23077), (982, 19129), (1034, 18167), (1739, 10802), (3478, 5401)]