19815120

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1$

素因数の和:134

約数の個数: 240

約数和(自身を含む): 75151440

約数和(自身を除く): 55336320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 29, 30, 36, 39, 40, 45, 48, 52, 58, 60, 65, 72, 73, 78, 80, 87, 90, 104, 116, 117, 120, 130, 144, 145, 146, 156, 174, 180, 195, 208, 219, 232, 234, 240, 260, 261, 290, 292, 312, 348, 360, 365, 377, 390, 435, 438, 464, 468, 520, 522, 580, 584, 585, 624, 657, 696, 720, 730, 754, 780, 870, 876, 936, 949, 1040, 1044, 1095, 1131, 1160, 1168, 1170, 1305, 1314, 1392, 1460, 1508, 1560, 1740, 1752, 1872, 1885, 1898, 2088, 2117, 2190, 2262, 2320, 2340, 2610, 2628, 2847, 2920, 3016, 3120, 3285, 3393, 3480, 3504, 3770, 3796, 4176, 4234, 4380, 4524, 4680, 4745, 5220, 5256, 5655, 5694, 5840, 6032, 6351, 6570, 6786, 6960, 7540, 7592, 8468, 8541, 8760, 9048, 9360, 9490, 10440, 10512, 10585, 11310, 11388, 12702, 13140, 13572, 14235, 15080, 15184, 16936, 16965, 17082, 17520, 18096, 18980, 19053, 20880, 21170, 22620, 22776, 25404, 26280, 27144, 27521, 28470, 30160, 31755, 33872, 33930, 34164, 37960, 38106, 42340, 42705, 45240, 45552, 50808, 52560, 54288, 55042, 56940, 63510, 67860, 68328, 75920, 76212, 82563, 84680, 85410, 90480, 95265, 101616, 110084, 113880, 127020, 135720, 136656, 137605, 152424, 165126, 169360, 170820, 190530, 220168, 227760, 247689, 254040, 271440, 275210, 304848, 330252, 341640, 381060, 412815, 440336, 495378, 508080, 550420, 660504, 683280, 762120, 825630, 990756, 1100840, 1238445, 1321008, 1524240, 1651260, 1981512, 2201680, 2476890, 3302520, 3963024, 4953780, 6605040, 9907560, 19815120]

約数ペア:

[(1, 19815120), (2, 9907560), (3, 6605040), (4, 4953780), (5, 3963024), (6, 3302520), (8, 2476890), (9, 2201680), (10, 1981512), (12, 1651260), (13, 1524240), (15, 1321008), (16, 1238445), (18, 1100840), (20, 990756), (24, 825630), (26, 762120), (29, 683280), (30, 660504), (36, 550420), (39, 508080), (40, 495378), (45, 440336), (48, 412815), (52, 381060), (58, 341640), (60, 330252), (65, 304848), (72, 275210), (73, 271440), (78, 254040), (80, 247689), (87, 227760), (90, 220168), (104, 190530), (116, 170820), (117, 169360), (120, 165126), (130, 152424), (144, 137605), (145, 136656), (146, 135720), (156, 127020), (174, 113880), (180, 110084), (195, 101616), (208, 95265), (219, 90480), (232, 85410), (234, 84680), (240, 82563), (260, 76212), (261, 75920), (290, 68328), (292, 67860), (312, 63510), (348, 56940), (360, 55042), (365, 54288), (377, 52560), (390, 50808), (435, 45552), (438, 45240), (464, 42705), (468, 42340), (520, 38106), (522, 37960), (580, 34164), (584, 33930), (585, 33872), (624, 31755), (657, 30160), (696, 28470), (720, 27521), (730, 27144), (754, 26280), (780, 25404), (870, 22776), (876, 22620), (936, 21170), (949, 20880), (1040, 19053), (1044, 18980), (1095, 18096), (1131, 17520), (1160, 17082), (1168, 16965), (1170, 16936), (1305, 15184), (1314, 15080), (1392, 14235), (1460, 13572), (1508, 13140), (1560, 12702), (1740, 11388), (1752, 11310), (1872, 10585), (1885, 10512), (1898, 10440), (2088, 9490), (2117, 9360), (2190, 9048), (2262, 8760), (2320, 8541), (2340, 8468), (2610, 7592), (2628, 7540), (2847, 6960), (2920, 6786), (3016, 6570), (3120, 6351), (3285, 6032), (3393, 5840), (3480, 5694), (3504, 5655), (3770, 5256), (3796, 5220), (4176, 4745), (4234, 4680), (4380, 4524)]