18928880

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:282

約数の個数: 80

約数和(自身を含む): 46872000

約数和(自身を除く): 27943120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 41, 58, 80, 82, 116, 145, 164, 199, 205, 232, 290, 328, 398, 410, 464, 580, 656, 796, 820, 995, 1160, 1189, 1592, 1640, 1990, 2320, 2378, 3184, 3280, 3980, 4756, 5771, 5945, 7960, 8159, 9512, 11542, 11890, 15920, 16318, 19024, 23084, 23780, 28855, 32636, 40795, 46168, 47560, 57710, 65272, 81590, 92336, 95120, 115420, 130544, 163180, 230840, 236611, 326360, 461680, 473222, 652720, 946444, 1183055, 1892888, 2366110, 3785776, 4732220, 9464440, 18928880]

約数ペア:

[(1, 18928880), (2, 9464440), (4, 4732220), (5, 3785776), (8, 2366110), (10, 1892888), (16, 1183055), (20, 946444), (29, 652720), (40, 473222), (41, 461680), (58, 326360), (80, 236611), (82, 230840), (116, 163180), (145, 130544), (164, 115420), (199, 95120), (205, 92336), (232, 81590), (290, 65272), (328, 57710), (398, 47560), (410, 46168), (464, 40795), (580, 32636), (656, 28855), (796, 23780), (820, 23084), (995, 19024), (1160, 16318), (1189, 15920), (1592, 11890), (1640, 11542), (1990, 9512), (2320, 8159), (2378, 7960), (3184, 5945), (3280, 5771), (3980, 4756)]