20155988900

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1\times {\mathrm{907}}^1$

素因数の和:1126

約数の個数: 144

約数和(自身を含む): 46342867200

約数和(自身を除く): 26186878300

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 79, 97, 100, 116, 145, 158, 194, 290, 316, 388, 395, 485, 580, 725, 790, 907, 970, 1450, 1580, 1814, 1940, 1975, 2291, 2425, 2813, 2900, 3628, 3950, 4535, 4582, 4850, 5626, 7663, 7900, 9070, 9164, 9700, 11252, 11455, 14065, 15326, 18140, 22675, 22910, 26303, 28130, 30652, 38315, 45350, 45820, 52606, 56260, 57275, 70325, 71653, 76630, 87979, 90700, 105212, 114550, 131515, 140650, 143306, 153260, 175958, 191575, 222227, 229100, 263030, 281300, 286612, 351916, 358265, 383150, 439895, 444454, 526060, 657575, 716530, 766300, 879790, 888908, 1111135, 1315150, 1433060, 1759580, 1791325, 2077937, 2199475, 2222270, 2551391, 2630300, 3582650, 4155874, 4398950, 4444540, 5102782, 5555675, 6950341, 7165300, 8311748, 8797900, 10205564, 10389685, 11111350, 12756955, 13900682, 20779370, 22222700, 25513910, 27801364, 34751705, 41558740, 51027820, 51948425, 63784775, 69503410, 103896850, 127569550, 139006820, 173758525, 201559889, 207793700, 255139100, 347517050, 403119778, 695034100, 806239556, 1007799445, 2015598890, 4031197780, 5038997225, 10077994450, 20155988900]

約数ペア:

[(1, 20155988900), (2, 10077994450), (4, 5038997225), (5, 4031197780), (10, 2015598890), (20, 1007799445), (25, 806239556), (29, 695034100), (50, 403119778), (58, 347517050), (79, 255139100), (97, 207793700), (100, 201559889), (116, 173758525), (145, 139006820), (158, 127569550), (194, 103896850), (290, 69503410), (316, 63784775), (388, 51948425), (395, 51027820), (485, 41558740), (580, 34751705), (725, 27801364), (790, 25513910), (907, 22222700), (970, 20779370), (1450, 13900682), (1580, 12756955), (1814, 11111350), (1940, 10389685), (1975, 10205564), (2291, 8797900), (2425, 8311748), (2813, 7165300), (2900, 6950341), (3628, 5555675), (3950, 5102782), (4535, 4444540), (4582, 4398950), (4850, 4155874), (5626, 3582650), (7663, 2630300), (7900, 2551391), (9070, 2222270), (9164, 2199475), (9700, 2077937), (11252, 1791325), (11455, 1759580), (14065, 1433060), (15326, 1315150), (18140, 1111135), (22675, 888908), (22910, 879790), (26303, 766300), (28130, 716530), (30652, 657575), (38315, 526060), (45350, 444454), (45820, 439895), (52606, 383150), (56260, 358265), (57275, 351916), (70325, 286612), (71653, 281300), (76630, 263030), (87979, 229100), (90700, 222227), (105212, 191575), (114550, 175958), (131515, 153260), (140650, 143306)]