20517000

素因数分解:

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

素因数の和:1008

約数の個数: 128

約数和(自身を含む): 73232640

約数和(自身を除く): 52715640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 25, 28, 30, 35, 40, 42, 50, 56, 60, 70, 75, 84, 100, 105, 120, 125, 140, 150, 168, 175, 200, 210, 250, 280, 300, 350, 375, 420, 500, 525, 600, 700, 750, 840, 875, 977, 1000, 1050, 1400, 1500, 1750, 1954, 2100, 2625, 2931, 3000, 3500, 3908, 4200, 4885, 5250, 5862, 6839, 7000, 7816, 9770, 10500, 11724, 13678, 14655, 19540, 20517, 21000, 23448, 24425, 27356, 29310, 34195, 39080, 41034, 48850, 54712, 58620, 68390, 73275, 82068, 97700, 102585, 117240, 122125, 136780, 146550, 164136, 170975, 195400, 205170, 244250, 273560, 293100, 341950, 366375, 410340, 488500, 512925, 586200, 683900, 732750, 820680, 854875, 977000, 1025850, 1367800, 1465500, 1709750, 2051700, 2564625, 2931000, 3419500, 4103400, 5129250, 6839000, 10258500, 20517000]

約数ペア:

[(1, 20517000), (2, 10258500), (3, 6839000), (4, 5129250), (5, 4103400), (6, 3419500), (7, 2931000), (8, 2564625), (10, 2051700), (12, 1709750), (14, 1465500), (15, 1367800), (20, 1025850), (21, 977000), (24, 854875), (25, 820680), (28, 732750), (30, 683900), (35, 586200), (40, 512925), (42, 488500), (50, 410340), (56, 366375), (60, 341950), (70, 293100), (75, 273560), (84, 244250), (100, 205170), (105, 195400), (120, 170975), (125, 164136), (140, 146550), (150, 136780), (168, 122125), (175, 117240), (200, 102585), (210, 97700), (250, 82068), (280, 73275), (300, 68390), (350, 58620), (375, 54712), (420, 48850), (500, 41034), (525, 39080), (600, 34195), (700, 29310), (750, 27356), (840, 24425), (875, 23448), (977, 21000), (1000, 20517), (1050, 19540), (1400, 14655), (1500, 13678), (1750, 11724), (1954, 10500), (2100, 9770), (2625, 7816), (2931, 7000), (3000, 6839), (3500, 5862), (3908, 5250), (4200, 4885)]