18756040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1$

素因数の和:119

約数の個数: 128

約数和(自身を含む): 49248000

約数和(自身を除く): 30491960

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 23, 29, 37, 38, 40, 46, 58, 74, 76, 92, 95, 115, 116, 145, 148, 152, 184, 185, 190, 230, 232, 290, 296, 370, 380, 437, 460, 551, 580, 667, 703, 740, 760, 851, 874, 920, 1073, 1102, 1160, 1334, 1406, 1480, 1702, 1748, 2146, 2185, 2204, 2668, 2755, 2812, 3335, 3404, 3496, 3515, 4255, 4292, 4370, 4408, 5336, 5365, 5510, 5624, 6670, 6808, 7030, 8510, 8584, 8740, 10730, 11020, 12673, 13340, 14060, 16169, 17020, 17480, 20387, 21460, 22040, 24679, 25346, 26680, 28120, 32338, 34040, 40774, 42920, 49358, 50692, 63365, 64676, 80845, 81548, 98716, 101384, 101935, 123395, 126730, 129352, 161690, 163096, 197432, 203870, 246790, 253460, 323380, 407740, 468901, 493580, 506920, 646760, 815480, 937802, 987160, 1875604, 2344505, 3751208, 4689010, 9378020, 18756040]

約数ペア:

[(1, 18756040), (2, 9378020), (4, 4689010), (5, 3751208), (8, 2344505), (10, 1875604), (19, 987160), (20, 937802), (23, 815480), (29, 646760), (37, 506920), (38, 493580), (40, 468901), (46, 407740), (58, 323380), (74, 253460), (76, 246790), (92, 203870), (95, 197432), (115, 163096), (116, 161690), (145, 129352), (148, 126730), (152, 123395), (184, 101935), (185, 101384), (190, 98716), (230, 81548), (232, 80845), (290, 64676), (296, 63365), (370, 50692), (380, 49358), (437, 42920), (460, 40774), (551, 34040), (580, 32338), (667, 28120), (703, 26680), (740, 25346), (760, 24679), (851, 22040), (874, 21460), (920, 20387), (1073, 17480), (1102, 17020), (1160, 16169), (1334, 14060), (1406, 13340), (1480, 12673), (1702, 11020), (1748, 10730), (2146, 8740), (2185, 8584), (2204, 8510), (2668, 7030), (2755, 6808), (2812, 6670), (3335, 5624), (3404, 5510), (3496, 5365), (3515, 5336), (4255, 4408), (4292, 4370)]