18867728

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:180

約数の個数: 80

約数和(自身を含む): 42854400

約数和(自身を除く): 23986672

約数列:

[1, 2, 4, 8, 11, 16, 22, 23, 44, 46, 59, 79, 88, 92, 118, 158, 176, 184, 236, 253, 316, 368, 472, 506, 632, 649, 869, 944, 1012, 1264, 1298, 1357, 1738, 1817, 2024, 2596, 2714, 3476, 3634, 4048, 4661, 5192, 5428, 6952, 7268, 9322, 10384, 10856, 13904, 14536, 14927, 18644, 19987, 21712, 29072, 29854, 37288, 39974, 51271, 59708, 74576, 79948, 102542, 107203, 119416, 159896, 205084, 214406, 238832, 319792, 410168, 428812, 820336, 857624, 1179233, 1715248, 2358466, 4716932, 9433864, 18867728]

約数ペア:

[(1, 18867728), (2, 9433864), (4, 4716932), (8, 2358466), (11, 1715248), (16, 1179233), (22, 857624), (23, 820336), (44, 428812), (46, 410168), (59, 319792), (79, 238832), (88, 214406), (92, 205084), (118, 159896), (158, 119416), (176, 107203), (184, 102542), (236, 79948), (253, 74576), (316, 59708), (368, 51271), (472, 39974), (506, 37288), (632, 29854), (649, 29072), (869, 21712), (944, 19987), (1012, 18644), (1264, 14927), (1298, 14536), (1357, 13904), (1738, 10856), (1817, 10384), (2024, 9322), (2596, 7268), (2714, 6952), (3476, 5428), (3634, 5192), (4048, 4661)]