28978040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{419}}^1$

素因数の和:469

約数の個数: 128

約数和(自身を含む): 84672000

約数和(自身を除く): 55693960

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 19, 20, 26, 28, 35, 38, 40, 52, 56, 65, 70, 76, 91, 95, 104, 130, 133, 140, 152, 182, 190, 247, 260, 266, 280, 364, 380, 419, 455, 494, 520, 532, 665, 728, 760, 838, 910, 988, 1064, 1235, 1330, 1676, 1729, 1820, 1976, 2095, 2470, 2660, 2933, 3352, 3458, 3640, 4190, 4940, 5320, 5447, 5866, 6916, 7961, 8380, 8645, 9880, 10894, 11732, 13832, 14665, 15922, 16760, 17290, 21788, 23464, 27235, 29330, 31844, 34580, 38129, 39805, 43576, 54470, 55727, 58660, 63688, 69160, 76258, 79610, 103493, 108940, 111454, 117320, 152516, 159220, 190645, 206986, 217880, 222908, 278635, 305032, 318440, 381290, 413972, 445816, 517465, 557270, 724451, 762580, 827944, 1034930, 1114540, 1448902, 1525160, 2069860, 2229080, 2897804, 3622255, 4139720, 5795608, 7244510, 14489020, 28978040]

約数ペア:

[(1, 28978040), (2, 14489020), (4, 7244510), (5, 5795608), (7, 4139720), (8, 3622255), (10, 2897804), (13, 2229080), (14, 2069860), (19, 1525160), (20, 1448902), (26, 1114540), (28, 1034930), (35, 827944), (38, 762580), (40, 724451), (52, 557270), (56, 517465), (65, 445816), (70, 413972), (76, 381290), (91, 318440), (95, 305032), (104, 278635), (130, 222908), (133, 217880), (140, 206986), (152, 190645), (182, 159220), (190, 152516), (247, 117320), (260, 111454), (266, 108940), (280, 103493), (364, 79610), (380, 76258), (419, 69160), (455, 63688), (494, 58660), (520, 55727), (532, 54470), (665, 43576), (728, 39805), (760, 38129), (838, 34580), (910, 31844), (988, 29330), (1064, 27235), (1235, 23464), (1330, 21788), (1676, 17290), (1729, 16760), (1820, 15922), (1976, 14665), (2095, 13832), (2470, 11732), (2660, 10894), (2933, 9880), (3352, 8645), (3458, 8380), (3640, 7961), (4190, 6916), (4940, 5866), (5320, 5447)]