28720384

素因数分解:

$2^8\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:112

約数の個数: 144

約数和(自身を含む): 75350016

約数和(自身を除く): 46629632

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 31, 32, 44, 47, 56, 62, 64, 77, 88, 94, 112, 124, 128, 154, 176, 188, 217, 224, 248, 256, 308, 329, 341, 352, 376, 434, 448, 496, 517, 616, 658, 682, 704, 752, 868, 896, 992, 1034, 1232, 1316, 1364, 1408, 1457, 1504, 1736, 1792, 1984, 2068, 2387, 2464, 2632, 2728, 2816, 2914, 3008, 3472, 3619, 3968, 4136, 4774, 4928, 5264, 5456, 5828, 6016, 6944, 7238, 7936, 8272, 9548, 9856, 10199, 10528, 10912, 11656, 12032, 13888, 14476, 16027, 16544, 19096, 19712, 20398, 21056, 21824, 23312, 27776, 28952, 32054, 33088, 38192, 40796, 42112, 43648, 46624, 55552, 57904, 64108, 66176, 76384, 81592, 84224, 87296, 93248, 112189, 115808, 128216, 132352, 152768, 163184, 186496, 224378, 231616, 256432, 305536, 326368, 372992, 448756, 463232, 512864, 611072, 652736, 897512, 926464, 1025728, 1305472, 1795024, 2051456, 2610944, 3590048, 4102912, 7180096, 14360192, 28720384]

約数ペア:

[(1, 28720384), (2, 14360192), (4, 7180096), (7, 4102912), (8, 3590048), (11, 2610944), (14, 2051456), (16, 1795024), (22, 1305472), (28, 1025728), (31, 926464), (32, 897512), (44, 652736), (47, 611072), (56, 512864), (62, 463232), (64, 448756), (77, 372992), (88, 326368), (94, 305536), (112, 256432), (124, 231616), (128, 224378), (154, 186496), (176, 163184), (188, 152768), (217, 132352), (224, 128216), (248, 115808), (256, 112189), (308, 93248), (329, 87296), (341, 84224), (352, 81592), (376, 76384), (434, 66176), (448, 64108), (496, 57904), (517, 55552), (616, 46624), (658, 43648), (682, 42112), (704, 40796), (752, 38192), (868, 33088), (896, 32054), (992, 28952), (1034, 27776), (1232, 23312), (1316, 21824), (1364, 21056), (1408, 20398), (1457, 19712), (1504, 19096), (1736, 16544), (1792, 16027), (1984, 14476), (2068, 13888), (2387, 12032), (2464, 11656), (2632, 10912), (2728, 10528), (2816, 10199), (2914, 9856), (3008, 9548), (3472, 8272), (3619, 7936), (3968, 7238), (4136, 6944), (4774, 6016), (4928, 5828), (5264, 5456)]