18940504

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1$

素因数の和:232

約数の個数: 64

約数和(自身を含む): 41057280

約数和(自身を除く): 22116776

約数列:

[1, 2, 4, 8, 11, 22, 31, 44, 53, 62, 88, 106, 124, 131, 212, 248, 262, 341, 424, 524, 583, 682, 1048, 1166, 1364, 1441, 1643, 2332, 2728, 2882, 3286, 4061, 4664, 5764, 6572, 6943, 8122, 11528, 13144, 13886, 16244, 18073, 27772, 32488, 36146, 44671, 55544, 72292, 76373, 89342, 144584, 152746, 178684, 215233, 305492, 357368, 430466, 610984, 860932, 1721864, 2367563, 4735126, 9470252, 18940504]

約数ペア:

[(1, 18940504), (2, 9470252), (4, 4735126), (8, 2367563), (11, 1721864), (22, 860932), (31, 610984), (44, 430466), (53, 357368), (62, 305492), (88, 215233), (106, 178684), (124, 152746), (131, 144584), (212, 89342), (248, 76373), (262, 72292), (341, 55544), (424, 44671), (524, 36146), (583, 32488), (682, 27772), (1048, 18073), (1166, 16244), (1364, 13886), (1441, 13144), (1643, 11528), (2332, 8122), (2728, 6943), (2882, 6572), (3286, 5764), (4061, 4664)]