28169960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:211

約数の個数: 128

約数和(自身を含む): 79833600

約数和(自身を除く): 51663640

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 71, 91, 104, 109, 130, 140, 142, 182, 218, 260, 280, 284, 355, 364, 436, 455, 497, 520, 545, 568, 710, 728, 763, 872, 910, 923, 994, 1090, 1417, 1420, 1526, 1820, 1846, 1988, 2180, 2485, 2834, 2840, 3052, 3640, 3692, 3815, 3976, 4360, 4615, 4970, 5668, 6104, 6461, 7085, 7384, 7630, 7739, 9230, 9919, 9940, 11336, 12922, 14170, 15260, 15478, 18460, 19838, 19880, 25844, 28340, 30520, 30956, 32305, 36920, 38695, 39676, 49595, 51688, 54173, 56680, 61912, 64610, 77390, 79352, 99190, 100607, 108346, 129220, 154780, 198380, 201214, 216692, 258440, 270865, 309560, 396760, 402428, 433384, 503035, 541730, 704249, 804856, 1006070, 1083460, 1408498, 2012140, 2166920, 2816996, 3521245, 4024280, 5633992, 7042490, 14084980, 28169960]

約数ペア:

[(1, 28169960), (2, 14084980), (4, 7042490), (5, 5633992), (7, 4024280), (8, 3521245), (10, 2816996), (13, 2166920), (14, 2012140), (20, 1408498), (26, 1083460), (28, 1006070), (35, 804856), (40, 704249), (52, 541730), (56, 503035), (65, 433384), (70, 402428), (71, 396760), (91, 309560), (104, 270865), (109, 258440), (130, 216692), (140, 201214), (142, 198380), (182, 154780), (218, 129220), (260, 108346), (280, 100607), (284, 99190), (355, 79352), (364, 77390), (436, 64610), (455, 61912), (497, 56680), (520, 54173), (545, 51688), (568, 49595), (710, 39676), (728, 38695), (763, 36920), (872, 32305), (910, 30956), (923, 30520), (994, 28340), (1090, 25844), (1417, 19880), (1420, 19838), (1526, 18460), (1820, 15478), (1846, 15260), (1988, 14170), (2180, 12922), (2485, 11336), (2834, 9940), (2840, 9919), (3052, 9230), (3640, 7739), (3692, 7630), (3815, 7384), (3976, 7085), (4360, 6461), (4615, 6104), (4970, 5668)]