21000887950

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{17387}}^1$

素因数の和:17459

約数の個数: 144

約数和(自身を含む): 49773845520

約数和(自身を除く): 28772957570

約数列:

[1, 2, 5, 7, 10, 14, 17, 25, 29, 34, 35, 49, 50, 58, 70, 85, 98, 119, 145, 170, 175, 203, 238, 245, 290, 350, 406, 425, 490, 493, 595, 725, 833, 850, 986, 1015, 1190, 1225, 1421, 1450, 1666, 2030, 2450, 2465, 2842, 2975, 3451, 4165, 4930, 5075, 5950, 6902, 7105, 8330, 10150, 12325, 14210, 17255, 17387, 20825, 24157, 24650, 34510, 34774, 35525, 41650, 48314, 71050, 86275, 86935, 120785, 121709, 172550, 173870, 241570, 243418, 295579, 434675, 504223, 591158, 603925, 608545, 851963, 869350, 1008446, 1207850, 1217090, 1477895, 1703926, 2069053, 2521115, 2955790, 3042725, 3529561, 4138106, 4259815, 5042230, 6085450, 7059122, 7389475, 8519630, 8571791, 10345265, 12605575, 14483371, 14778950, 17143582, 17647805, 20690530, 21299075, 24706927, 25211150, 28966742, 35295610, 42598150, 42858955, 49413854, 51726325, 60002537, 72416855, 85717910, 88239025, 103452650, 120005074, 123534635, 144833710, 176478050, 214294775, 247069270, 300012685, 362084275, 420017759, 428589550, 600025370, 617673175, 724168550, 840035518, 1235346350, 1500063425, 2100088795, 3000126850, 4200177590, 10500443975, 21000887950]

約数ペア:

[(1, 21000887950), (2, 10500443975), (5, 4200177590), (7, 3000126850), (10, 2100088795), (14, 1500063425), (17, 1235346350), (25, 840035518), (29, 724168550), (34, 617673175), (35, 600025370), (49, 428589550), (50, 420017759), (58, 362084275), (70, 300012685), (85, 247069270), (98, 214294775), (119, 176478050), (145, 144833710), (170, 123534635), (175, 120005074), (203, 103452650), (238, 88239025), (245, 85717910), (290, 72416855), (350, 60002537), (406, 51726325), (425, 49413854), (490, 42858955), (493, 42598150), (595, 35295610), (725, 28966742), (833, 25211150), (850, 24706927), (986, 21299075), (1015, 20690530), (1190, 17647805), (1225, 17143582), (1421, 14778950), (1450, 14483371), (1666, 12605575), (2030, 10345265), (2450, 8571791), (2465, 8519630), (2842, 7389475), (2975, 7059122), (3451, 6085450), (4165, 5042230), (4930, 4259815), (5075, 4138106), (5950, 3529561), (6902, 3042725), (7105, 2955790), (8330, 2521115), (10150, 2069053), (12325, 1703926), (14210, 1477895), (17255, 1217090), (17387, 1207850), (20825, 1008446), (24157, 869350), (24650, 851963), (34510, 608545), (34774, 603925), (35525, 591158), (41650, 504223), (48314, 434675), (71050, 295579), (86275, 243418), (86935, 241570), (120785, 173870), (121709, 172550)]