19729800

素因数分解:

$2^3\times 3^2\times 5^2\times {\mathrm{97}}^1\times {\mathrm{113}}^1$

素因数の和:232

約数の個数: 144

約数和(自身を含む): 67534740

約数和(自身を除く): 47804940

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 36, 40, 45, 50, 60, 72, 75, 90, 97, 100, 113, 120, 150, 180, 194, 200, 225, 226, 291, 300, 339, 360, 388, 450, 452, 485, 565, 582, 600, 678, 776, 873, 900, 904, 970, 1017, 1130, 1164, 1356, 1455, 1695, 1746, 1800, 1940, 2034, 2260, 2328, 2425, 2712, 2825, 2910, 3390, 3492, 3880, 4068, 4365, 4520, 4850, 5085, 5650, 5820, 6780, 6984, 7275, 8136, 8475, 8730, 9700, 10170, 10961, 11300, 11640, 13560, 14550, 16950, 17460, 19400, 20340, 21825, 21922, 22600, 25425, 29100, 32883, 33900, 34920, 40680, 43650, 43844, 50850, 54805, 58200, 65766, 67800, 87300, 87688, 98649, 101700, 109610, 131532, 164415, 174600, 197298, 203400, 219220, 263064, 274025, 328830, 394596, 438440, 493245, 548050, 657660, 789192, 822075, 986490, 1096100, 1315320, 1644150, 1972980, 2192200, 2466225, 3288300, 3945960, 4932450, 6576600, 9864900, 19729800]

約数ペア:

[(1, 19729800), (2, 9864900), (3, 6576600), (4, 4932450), (5, 3945960), (6, 3288300), (8, 2466225), (9, 2192200), (10, 1972980), (12, 1644150), (15, 1315320), (18, 1096100), (20, 986490), (24, 822075), (25, 789192), (30, 657660), (36, 548050), (40, 493245), (45, 438440), (50, 394596), (60, 328830), (72, 274025), (75, 263064), (90, 219220), (97, 203400), (100, 197298), (113, 174600), (120, 164415), (150, 131532), (180, 109610), (194, 101700), (200, 98649), (225, 87688), (226, 87300), (291, 67800), (300, 65766), (339, 58200), (360, 54805), (388, 50850), (450, 43844), (452, 43650), (485, 40680), (565, 34920), (582, 33900), (600, 32883), (678, 29100), (776, 25425), (873, 22600), (900, 21922), (904, 21825), (970, 20340), (1017, 19400), (1130, 17460), (1164, 16950), (1356, 14550), (1455, 13560), (1695, 11640), (1746, 11300), (1800, 10961), (1940, 10170), (2034, 9700), (2260, 8730), (2328, 8475), (2425, 8136), (2712, 7275), (2825, 6984), (2910, 6780), (3390, 5820), (3492, 5650), (3880, 5085), (4068, 4850), (4365, 4520)]