21539156940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{977}}^1\times {\mathrm{17497}}^1$

素因数の和:18496

約数の個数: 144

約数和(自身を含む): 74749776192

約数和(自身を除く): 53210619252

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 977, 1260, 1954, 2931, 3908, 4885, 5862, 6839, 8793, 9770, 11724, 13678, 14655, 17497, 17586, 19540, 20517, 27356, 29310, 34195, 34994, 35172, 41034, 43965, 52491, 58620, 61551, 68390, 69988, 82068, 87485, 87930, 102585, 104982, 122479, 123102, 136780, 157473, 174970, 175860, 205170, 209964, 244958, 246204, 262455, 307755, 314946, 349940, 367437, 410340, 489916, 524910, 612395, 615510, 629892, 734874, 787365, 1049820, 1102311, 1224790, 1231020, 1469748, 1574730, 1837185, 2204622, 2449580, 3149460, 3674370, 4409244, 5511555, 7348740, 11023110, 17094569, 22046220, 34189138, 51283707, 68378276, 85472845, 102567414, 119661983, 153851121, 170945690, 205134828, 239323966, 256418535, 307702242, 341891380, 358985949, 478647932, 512837070, 598309915, 615404484, 717971898, 769255605, 1025674140, 1076957847, 1196619830, 1435943796, 1538511210, 1794929745, 2153915694, 2393239660, 3077022420, 3589859490, 4307831388, 5384789235, 7179718980, 10769578470, 21539156940]

約数ペア:

[(1, 21539156940), (2, 10769578470), (3, 7179718980), (4, 5384789235), (5, 4307831388), (6, 3589859490), (7, 3077022420), (9, 2393239660), (10, 2153915694), (12, 1794929745), (14, 1538511210), (15, 1435943796), (18, 1196619830), (20, 1076957847), (21, 1025674140), (28, 769255605), (30, 717971898), (35, 615404484), (36, 598309915), (42, 512837070), (45, 478647932), (60, 358985949), (63, 341891380), (70, 307702242), (84, 256418535), (90, 239323966), (105, 205134828), (126, 170945690), (140, 153851121), (180, 119661983), (210, 102567414), (252, 85472845), (315, 68378276), (420, 51283707), (630, 34189138), (977, 22046220), (1260, 17094569), (1954, 11023110), (2931, 7348740), (3908, 5511555), (4885, 4409244), (5862, 3674370), (6839, 3149460), (8793, 2449580), (9770, 2204622), (11724, 1837185), (13678, 1574730), (14655, 1469748), (17497, 1231020), (17586, 1224790), (19540, 1102311), (20517, 1049820), (27356, 787365), (29310, 734874), (34195, 629892), (34994, 615510), (35172, 612395), (41034, 524910), (43965, 489916), (52491, 410340), (58620, 367437), (61551, 349940), (68390, 314946), (69988, 307755), (82068, 262455), (87485, 246204), (87930, 244958), (102585, 209964), (104982, 205170), (122479, 175860), (123102, 174970), (136780, 157473)]