28874720

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{127}}^1$

素因数の和:185

約数の個数: 144

約数和(自身を含む): 82736640

約数和(自身を除く): 53861920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 32, 35, 40, 49, 56, 58, 70, 80, 98, 112, 116, 127, 140, 145, 160, 196, 203, 224, 232, 245, 254, 280, 290, 392, 406, 464, 490, 508, 560, 580, 635, 784, 812, 889, 928, 980, 1015, 1016, 1120, 1160, 1270, 1421, 1568, 1624, 1778, 1960, 2030, 2032, 2320, 2540, 2842, 3248, 3556, 3683, 3920, 4060, 4064, 4445, 4640, 5080, 5684, 6223, 6496, 7105, 7112, 7366, 7840, 8120, 8890, 10160, 11368, 12446, 14210, 14224, 14732, 16240, 17780, 18415, 20320, 22736, 24892, 25781, 28420, 28448, 29464, 31115, 32480, 35560, 36830, 45472, 49784, 51562, 56840, 58928, 62230, 71120, 73660, 99568, 103124, 113680, 117856, 124460, 128905, 142240, 147320, 180467, 199136, 206248, 227360, 248920, 257810, 294640, 360934, 412496, 497840, 515620, 589280, 721868, 824992, 902335, 995680, 1031240, 1443736, 1804670, 2062480, 2887472, 3609340, 4124960, 5774944, 7218680, 14437360, 28874720]

約数ペア:

[(1, 28874720), (2, 14437360), (4, 7218680), (5, 5774944), (7, 4124960), (8, 3609340), (10, 2887472), (14, 2062480), (16, 1804670), (20, 1443736), (28, 1031240), (29, 995680), (32, 902335), (35, 824992), (40, 721868), (49, 589280), (56, 515620), (58, 497840), (70, 412496), (80, 360934), (98, 294640), (112, 257810), (116, 248920), (127, 227360), (140, 206248), (145, 199136), (160, 180467), (196, 147320), (203, 142240), (224, 128905), (232, 124460), (245, 117856), (254, 113680), (280, 103124), (290, 99568), (392, 73660), (406, 71120), (464, 62230), (490, 58928), (508, 56840), (560, 51562), (580, 49784), (635, 45472), (784, 36830), (812, 35560), (889, 32480), (928, 31115), (980, 29464), (1015, 28448), (1016, 28420), (1120, 25781), (1160, 24892), (1270, 22736), (1421, 20320), (1568, 18415), (1624, 17780), (1778, 16240), (1960, 14732), (2030, 14224), (2032, 14210), (2320, 12446), (2540, 11368), (2842, 10160), (3248, 8890), (3556, 8120), (3683, 7840), (3920, 7366), (4060, 7112), (4064, 7105), (4445, 6496), (4640, 6223), (5080, 5684)]