28409560

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1289}}^1$

素因数の和:1348

約数の個数: 64

約数和(自身を含む): 69660000

約数和(自身を除く): 41250440

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 29, 38, 40, 58, 76, 95, 116, 145, 152, 190, 232, 290, 380, 551, 580, 760, 1102, 1160, 1289, 2204, 2578, 2755, 4408, 5156, 5510, 6445, 10312, 11020, 12890, 22040, 24491, 25780, 37381, 48982, 51560, 74762, 97964, 122455, 149524, 186905, 195928, 244910, 299048, 373810, 489820, 710239, 747620, 979640, 1420478, 1495240, 2840956, 3551195, 5681912, 7102390, 14204780, 28409560]

約数ペア:

[(1, 28409560), (2, 14204780), (4, 7102390), (5, 5681912), (8, 3551195), (10, 2840956), (19, 1495240), (20, 1420478), (29, 979640), (38, 747620), (40, 710239), (58, 489820), (76, 373810), (95, 299048), (116, 244910), (145, 195928), (152, 186905), (190, 149524), (232, 122455), (290, 97964), (380, 74762), (551, 51560), (580, 48982), (760, 37381), (1102, 25780), (1160, 24491), (1289, 22040), (2204, 12890), (2578, 11020), (2755, 10312), (4408, 6445), (5156, 5510)]