18019980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{479}}^1$

素因数の和:524

約数の個数: 144

約数和(自身を含む): 62899200

約数和(自身を除く): 44879220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 19, 20, 22, 30, 33, 36, 38, 44, 45, 55, 57, 60, 66, 76, 90, 95, 99, 110, 114, 132, 165, 171, 180, 190, 198, 209, 220, 228, 285, 330, 342, 380, 396, 418, 479, 495, 570, 627, 660, 684, 836, 855, 958, 990, 1045, 1140, 1254, 1437, 1710, 1881, 1916, 1980, 2090, 2395, 2508, 2874, 3135, 3420, 3762, 4180, 4311, 4790, 5269, 5748, 6270, 7185, 7524, 8622, 9101, 9405, 9580, 10538, 12540, 14370, 15807, 17244, 18202, 18810, 21076, 21555, 26345, 27303, 28740, 31614, 36404, 37620, 43110, 45505, 47421, 52690, 54606, 63228, 79035, 81909, 86220, 91010, 94842, 100111, 105380, 109212, 136515, 158070, 163818, 182020, 189684, 200222, 237105, 273030, 300333, 316140, 327636, 400444, 409545, 474210, 500555, 546060, 600666, 819090, 900999, 948420, 1001110, 1201332, 1501665, 1638180, 1801998, 2002220, 3003330, 3603996, 4504995, 6006660, 9009990, 18019980]

約数ペア:

[(1, 18019980), (2, 9009990), (3, 6006660), (4, 4504995), (5, 3603996), (6, 3003330), (9, 2002220), (10, 1801998), (11, 1638180), (12, 1501665), (15, 1201332), (18, 1001110), (19, 948420), (20, 900999), (22, 819090), (30, 600666), (33, 546060), (36, 500555), (38, 474210), (44, 409545), (45, 400444), (55, 327636), (57, 316140), (60, 300333), (66, 273030), (76, 237105), (90, 200222), (95, 189684), (99, 182020), (110, 163818), (114, 158070), (132, 136515), (165, 109212), (171, 105380), (180, 100111), (190, 94842), (198, 91010), (209, 86220), (220, 81909), (228, 79035), (285, 63228), (330, 54606), (342, 52690), (380, 47421), (396, 45505), (418, 43110), (479, 37620), (495, 36404), (570, 31614), (627, 28740), (660, 27303), (684, 26345), (836, 21555), (855, 21076), (958, 18810), (990, 18202), (1045, 17244), (1140, 15807), (1254, 14370), (1437, 12540), (1710, 10538), (1881, 9580), (1916, 9405), (1980, 9101), (2090, 8622), (2395, 7524), (2508, 7185), (2874, 6270), (3135, 5748), (3420, 5269), (3762, 4790), (4180, 4311)]