20395440

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2179}}^1$

素因数の和:2211

約数の個数: 120

約数和(自身を含む): 73797360

約数和(自身を除く): 53401920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 104, 117, 120, 130, 144, 156, 180, 195, 208, 234, 240, 260, 312, 360, 390, 468, 520, 585, 624, 720, 780, 936, 1040, 1170, 1560, 1872, 2179, 2340, 3120, 4358, 4680, 6537, 8716, 9360, 10895, 13074, 17432, 19611, 21790, 26148, 28327, 32685, 34864, 39222, 43580, 52296, 56654, 65370, 78444, 84981, 87160, 98055, 104592, 113308, 130740, 141635, 156888, 169962, 174320, 196110, 226616, 254943, 261480, 283270, 313776, 339924, 392220, 424905, 453232, 509886, 522960, 566540, 679848, 784440, 849810, 1019772, 1133080, 1274715, 1359696, 1568880, 1699620, 2039544, 2266160, 2549430, 3399240, 4079088, 5098860, 6798480, 10197720, 20395440]

約数ペア:

[(1, 20395440), (2, 10197720), (3, 6798480), (4, 5098860), (5, 4079088), (6, 3399240), (8, 2549430), (9, 2266160), (10, 2039544), (12, 1699620), (13, 1568880), (15, 1359696), (16, 1274715), (18, 1133080), (20, 1019772), (24, 849810), (26, 784440), (30, 679848), (36, 566540), (39, 522960), (40, 509886), (45, 453232), (48, 424905), (52, 392220), (60, 339924), (65, 313776), (72, 283270), (78, 261480), (80, 254943), (90, 226616), (104, 196110), (117, 174320), (120, 169962), (130, 156888), (144, 141635), (156, 130740), (180, 113308), (195, 104592), (208, 98055), (234, 87160), (240, 84981), (260, 78444), (312, 65370), (360, 56654), (390, 52296), (468, 43580), (520, 39222), (585, 34864), (624, 32685), (720, 28327), (780, 26148), (936, 21790), (1040, 19611), (1170, 17432), (1560, 13074), (1872, 10895), (2179, 9360), (2340, 8716), (3120, 6537), (4358, 4680)]