20495760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:165

約数の個数: 160

約数和(自身を含む): 68567040

約数和(自身を除く): 48071280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 40, 46, 47, 48, 60, 69, 79, 80, 92, 94, 115, 120, 138, 141, 158, 184, 188, 230, 235, 237, 240, 276, 282, 316, 345, 368, 376, 395, 460, 470, 474, 552, 564, 632, 690, 705, 752, 790, 920, 940, 948, 1081, 1104, 1128, 1185, 1264, 1380, 1410, 1580, 1817, 1840, 1880, 1896, 2162, 2256, 2370, 2760, 2820, 3160, 3243, 3634, 3713, 3760, 3792, 4324, 4740, 5405, 5451, 5520, 5640, 6320, 6486, 7268, 7426, 8648, 9085, 9480, 10810, 10902, 11139, 11280, 12972, 14536, 14852, 16215, 17296, 18170, 18565, 18960, 21620, 21804, 22278, 25944, 27255, 29072, 29704, 32430, 36340, 37130, 43240, 43608, 44556, 51888, 54510, 55695, 59408, 64860, 72680, 74260, 85399, 86480, 87216, 89112, 109020, 111390, 129720, 145360, 148520, 170798, 178224, 218040, 222780, 256197, 259440, 297040, 341596, 426995, 436080, 445560, 512394, 683192, 853990, 891120, 1024788, 1280985, 1366384, 1707980, 2049576, 2561970, 3415960, 4099152, 5123940, 6831920, 10247880, 20495760]

約数ペア:

[(1, 20495760), (2, 10247880), (3, 6831920), (4, 5123940), (5, 4099152), (6, 3415960), (8, 2561970), (10, 2049576), (12, 1707980), (15, 1366384), (16, 1280985), (20, 1024788), (23, 891120), (24, 853990), (30, 683192), (40, 512394), (46, 445560), (47, 436080), (48, 426995), (60, 341596), (69, 297040), (79, 259440), (80, 256197), (92, 222780), (94, 218040), (115, 178224), (120, 170798), (138, 148520), (141, 145360), (158, 129720), (184, 111390), (188, 109020), (230, 89112), (235, 87216), (237, 86480), (240, 85399), (276, 74260), (282, 72680), (316, 64860), (345, 59408), (368, 55695), (376, 54510), (395, 51888), (460, 44556), (470, 43608), (474, 43240), (552, 37130), (564, 36340), (632, 32430), (690, 29704), (705, 29072), (752, 27255), (790, 25944), (920, 22278), (940, 21804), (948, 21620), (1081, 18960), (1104, 18565), (1128, 18170), (1185, 17296), (1264, 16215), (1380, 14852), (1410, 14536), (1580, 12972), (1817, 11280), (1840, 11139), (1880, 10902), (1896, 10810), (2162, 9480), (2256, 9085), (2370, 8648), (2760, 7426), (2820, 7268), (3160, 6486), (3243, 6320), (3634, 5640), (3713, 5520), (3760, 5451), (3792, 5405), (4324, 4740)]