19781520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{127}}^1$

素因数の和:213

約数の個数: 160

約数和(自身を含む): 68567040

約数和(自身を除く): 48785520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 59, 60, 66, 80, 88, 110, 118, 120, 127, 132, 165, 176, 177, 220, 236, 240, 254, 264, 295, 330, 354, 381, 440, 472, 508, 528, 590, 635, 649, 660, 708, 762, 880, 885, 944, 1016, 1180, 1270, 1298, 1320, 1397, 1416, 1524, 1770, 1905, 1947, 2032, 2360, 2540, 2596, 2640, 2794, 2832, 3048, 3245, 3540, 3810, 3894, 4191, 4720, 5080, 5192, 5588, 6096, 6490, 6985, 7080, 7493, 7620, 7788, 8382, 9735, 10160, 10384, 11176, 12980, 13970, 14160, 14986, 15240, 15576, 16764, 19470, 20955, 22352, 22479, 25960, 27940, 29972, 30480, 31152, 33528, 37465, 38940, 41910, 44958, 51920, 55880, 59944, 67056, 74930, 77880, 82423, 83820, 89916, 111760, 112395, 119888, 149860, 155760, 164846, 167640, 179832, 224790, 247269, 299720, 329692, 335280, 359664, 412115, 449580, 494538, 599440, 659384, 824230, 899160, 989076, 1236345, 1318768, 1648460, 1798320, 1978152, 2472690, 3296920, 3956304, 4945380, 6593840, 9890760, 19781520]

約数ペア:

[(1, 19781520), (2, 9890760), (3, 6593840), (4, 4945380), (5, 3956304), (6, 3296920), (8, 2472690), (10, 1978152), (11, 1798320), (12, 1648460), (15, 1318768), (16, 1236345), (20, 989076), (22, 899160), (24, 824230), (30, 659384), (33, 599440), (40, 494538), (44, 449580), (48, 412115), (55, 359664), (59, 335280), (60, 329692), (66, 299720), (80, 247269), (88, 224790), (110, 179832), (118, 167640), (120, 164846), (127, 155760), (132, 149860), (165, 119888), (176, 112395), (177, 111760), (220, 89916), (236, 83820), (240, 82423), (254, 77880), (264, 74930), (295, 67056), (330, 59944), (354, 55880), (381, 51920), (440, 44958), (472, 41910), (508, 38940), (528, 37465), (590, 33528), (635, 31152), (649, 30480), (660, 29972), (708, 27940), (762, 25960), (880, 22479), (885, 22352), (944, 20955), (1016, 19470), (1180, 16764), (1270, 15576), (1298, 15240), (1320, 14986), (1397, 14160), (1416, 13970), (1524, 12980), (1770, 11176), (1905, 10384), (1947, 10160), (2032, 9735), (2360, 8382), (2540, 7788), (2596, 7620), (2640, 7493), (2794, 7080), (2832, 6985), (3048, 6490), (3245, 6096), (3540, 5588), (3810, 5192), (3894, 5080), (4191, 4720)]