28167440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{281}}^1$

素因数の和:480

約数の個数: 80

約数和(自身を含む): 75530880

約数和(自身を除く): 47363440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 179, 280, 281, 358, 560, 562, 716, 895, 1124, 1253, 1405, 1432, 1790, 1967, 2248, 2506, 2810, 2864, 3580, 3934, 4496, 5012, 5620, 6265, 7160, 7868, 9835, 10024, 11240, 12530, 14320, 15736, 19670, 20048, 22480, 25060, 31472, 39340, 50120, 50299, 78680, 100240, 100598, 157360, 201196, 251495, 352093, 402392, 502990, 704186, 804784, 1005980, 1408372, 1760465, 2011960, 2816744, 3520930, 4023920, 5633488, 7041860, 14083720, 28167440]

約数ペア:

[(1, 28167440), (2, 14083720), (4, 7041860), (5, 5633488), (7, 4023920), (8, 3520930), (10, 2816744), (14, 2011960), (16, 1760465), (20, 1408372), (28, 1005980), (35, 804784), (40, 704186), (56, 502990), (70, 402392), (80, 352093), (112, 251495), (140, 201196), (179, 157360), (280, 100598), (281, 100240), (358, 78680), (560, 50299), (562, 50120), (716, 39340), (895, 31472), (1124, 25060), (1253, 22480), (1405, 20048), (1432, 19670), (1790, 15736), (1967, 14320), (2248, 12530), (2506, 11240), (2810, 10024), (2864, 9835), (3580, 7868), (3934, 7160), (4496, 6265), (5012, 5620)]