639804

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 1685376

約数和(自身を除く): 1045572

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 37, 44, 66, 74, 111, 131, 132, 148, 222, 262, 393, 407, 444, 524, 786, 814, 1221, 1441, 1572, 1628, 2442, 2882, 4323, 4847, 4884, 5764, 8646, 9694, 14541, 17292, 19388, 29082, 53317, 58164, 106634, 159951, 213268, 319902, 639804]

約数ペア:

[(1, 639804), (2, 319902), (3, 213268), (4, 159951), (6, 106634), (11, 58164), (12, 53317), (22, 29082), (33, 19388), (37, 17292), (44, 14541), (66, 9694), (74, 8646), (111, 5764), (131, 4884), (132, 4847), (148, 4323), (222, 2882), (262, 2442), (393, 1628), (407, 1572), (444, 1441), (524, 1221), (786, 814)]