20503080

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{337}}^1$

素因数の和:380

約数の個数: 144

約数和(自身を含む): 72369180

約数和(自身を除く): 51866100

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 30, 36, 39, 40, 45, 52, 60, 65, 72, 78, 90, 104, 117, 120, 130, 156, 169, 180, 195, 234, 260, 312, 337, 338, 360, 390, 468, 507, 520, 585, 674, 676, 780, 845, 936, 1011, 1014, 1170, 1348, 1352, 1521, 1560, 1685, 1690, 2022, 2028, 2340, 2535, 2696, 3033, 3042, 3370, 3380, 4044, 4056, 4381, 4680, 5055, 5070, 6066, 6084, 6740, 6760, 7605, 8088, 8762, 10110, 10140, 12132, 12168, 13143, 13480, 15165, 15210, 17524, 20220, 20280, 21905, 24264, 26286, 30330, 30420, 35048, 39429, 40440, 43810, 52572, 56953, 60660, 60840, 65715, 78858, 87620, 105144, 113906, 121320, 131430, 157716, 170859, 175240, 197145, 227812, 262860, 284765, 315432, 341718, 394290, 455624, 512577, 525720, 569530, 683436, 788580, 854295, 1025154, 1139060, 1366872, 1577160, 1708590, 2050308, 2278120, 2562885, 3417180, 4100616, 5125770, 6834360, 10251540, 20503080]

約数ペア:

[(1, 20503080), (2, 10251540), (3, 6834360), (4, 5125770), (5, 4100616), (6, 3417180), (8, 2562885), (9, 2278120), (10, 2050308), (12, 1708590), (13, 1577160), (15, 1366872), (18, 1139060), (20, 1025154), (24, 854295), (26, 788580), (30, 683436), (36, 569530), (39, 525720), (40, 512577), (45, 455624), (52, 394290), (60, 341718), (65, 315432), (72, 284765), (78, 262860), (90, 227812), (104, 197145), (117, 175240), (120, 170859), (130, 157716), (156, 131430), (169, 121320), (180, 113906), (195, 105144), (234, 87620), (260, 78858), (312, 65715), (337, 60840), (338, 60660), (360, 56953), (390, 52572), (468, 43810), (507, 40440), (520, 39429), (585, 35048), (674, 30420), (676, 30330), (780, 26286), (845, 24264), (936, 21905), (1011, 20280), (1014, 20220), (1170, 17524), (1348, 15210), (1352, 15165), (1521, 13480), (1560, 13143), (1685, 12168), (1690, 12132), (2022, 10140), (2028, 10110), (2340, 8762), (2535, 8088), (2696, 7605), (3033, 6760), (3042, 6740), (3370, 6084), (3380, 6066), (4044, 5070), (4056, 5055), (4381, 4680)]