28479080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{193}}^1$

素因数の和:259

約数の個数: 128

約数和(自身を含む): 80455680

約数和(自身を除く): 51976600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 31, 34, 35, 40, 56, 62, 68, 70, 85, 119, 124, 136, 140, 155, 170, 193, 217, 238, 248, 280, 310, 340, 386, 434, 476, 527, 595, 620, 680, 772, 868, 952, 965, 1054, 1085, 1190, 1240, 1351, 1544, 1736, 1930, 2108, 2170, 2380, 2635, 2702, 3281, 3689, 3860, 4216, 4340, 4760, 5270, 5404, 5983, 6562, 6755, 7378, 7720, 8680, 10540, 10808, 11966, 13124, 13510, 14756, 16405, 18445, 21080, 22967, 23932, 26248, 27020, 29512, 29915, 32810, 36890, 41881, 45934, 47864, 54040, 59830, 65620, 73780, 83762, 91868, 101711, 114835, 119660, 131240, 147560, 167524, 183736, 203422, 209405, 229670, 239320, 335048, 406844, 418810, 459340, 508555, 711977, 813688, 837620, 918680, 1017110, 1423954, 1675240, 2034220, 2847908, 3559885, 4068440, 5695816, 7119770, 14239540, 28479080]

約数ペア:

[(1, 28479080), (2, 14239540), (4, 7119770), (5, 5695816), (7, 4068440), (8, 3559885), (10, 2847908), (14, 2034220), (17, 1675240), (20, 1423954), (28, 1017110), (31, 918680), (34, 837620), (35, 813688), (40, 711977), (56, 508555), (62, 459340), (68, 418810), (70, 406844), (85, 335048), (119, 239320), (124, 229670), (136, 209405), (140, 203422), (155, 183736), (170, 167524), (193, 147560), (217, 131240), (238, 119660), (248, 114835), (280, 101711), (310, 91868), (340, 83762), (386, 73780), (434, 65620), (476, 59830), (527, 54040), (595, 47864), (620, 45934), (680, 41881), (772, 36890), (868, 32810), (952, 29915), (965, 29512), (1054, 27020), (1085, 26248), (1190, 23932), (1240, 22967), (1351, 21080), (1544, 18445), (1736, 16405), (1930, 14756), (2108, 13510), (2170, 13124), (2380, 11966), (2635, 10808), (2702, 10540), (3281, 8680), (3689, 7720), (3860, 7378), (4216, 6755), (4340, 6562), (4760, 5983), (5270, 5404)]