399225840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{643}}^1$

素因数の和:871

約数の個数: 160

約数和(自身を含む): 1341580800

約数和(自身を除く): 942354960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 199, 208, 240, 260, 312, 390, 398, 520, 597, 624, 643, 780, 796, 995, 1040, 1194, 1286, 1560, 1592, 1929, 1990, 2388, 2572, 2587, 2985, 3120, 3184, 3215, 3858, 3980, 4776, 5144, 5174, 5970, 6430, 7716, 7761, 7960, 8359, 9552, 9645, 10288, 10348, 11940, 12860, 12935, 15432, 15522, 15920, 16718, 19290, 20696, 23880, 25077, 25720, 25870, 30864, 31044, 33436, 38580, 38805, 41392, 41795, 47760, 50154, 51440, 51740, 62088, 66872, 77160, 77610, 83590, 100308, 103480, 124176, 125385, 127957, 133744, 154320, 155220, 167180, 200616, 206960, 250770, 255914, 310440, 334360, 383871, 401232, 501540, 511828, 620880, 639785, 668720, 767742, 1003080, 1023656, 1279570, 1535484, 1663441, 1919355, 2006160, 2047312, 2559140, 3070968, 3326882, 3838710, 4990323, 5118280, 6141936, 6653764, 7677420, 8317205, 9980646, 10236560, 13307528, 15354840, 16634410, 19961292, 24951615, 26615056, 30709680, 33268820, 39922584, 49903230, 66537640, 79845168, 99806460, 133075280, 199612920, 399225840]

約数ペア:

[(1, 399225840), (2, 199612920), (3, 133075280), (4, 99806460), (5, 79845168), (6, 66537640), (8, 49903230), (10, 39922584), (12, 33268820), (13, 30709680), (15, 26615056), (16, 24951615), (20, 19961292), (24, 16634410), (26, 15354840), (30, 13307528), (39, 10236560), (40, 9980646), (48, 8317205), (52, 7677420), (60, 6653764), (65, 6141936), (78, 5118280), (80, 4990323), (104, 3838710), (120, 3326882), (130, 3070968), (156, 2559140), (195, 2047312), (199, 2006160), (208, 1919355), (240, 1663441), (260, 1535484), (312, 1279570), (390, 1023656), (398, 1003080), (520, 767742), (597, 668720), (624, 639785), (643, 620880), (780, 511828), (796, 501540), (995, 401232), (1040, 383871), (1194, 334360), (1286, 310440), (1560, 255914), (1592, 250770), (1929, 206960), (1990, 200616), (2388, 167180), (2572, 155220), (2587, 154320), (2985, 133744), (3120, 127957), (3184, 125385), (3215, 124176), (3858, 103480), (3980, 100308), (4776, 83590), (5144, 77610), (5174, 77160), (5970, 66872), (6430, 62088), (7716, 51740), (7761, 51440), (7960, 50154), (8359, 47760), (9552, 41795), (9645, 41392), (10288, 38805), (10348, 38580), (11940, 33436), (12860, 31044), (12935, 30864), (15432, 25870), (15522, 25720), (15920, 25077), (16718, 23880), (19290, 20696)]