20654760

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{367}}^1$

素因数の和:455

約数の個数: 128

約数和(自身を含む): 72069120

約数和(自身を除く): 51414360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 67, 70, 84, 105, 120, 134, 140, 168, 201, 210, 268, 280, 335, 367, 402, 420, 469, 536, 670, 734, 804, 840, 938, 1005, 1101, 1340, 1407, 1468, 1608, 1835, 1876, 2010, 2202, 2345, 2569, 2680, 2814, 2936, 3670, 3752, 4020, 4404, 4690, 5138, 5505, 5628, 7035, 7340, 7707, 8040, 8808, 9380, 10276, 11010, 11256, 12845, 14070, 14680, 15414, 18760, 20552, 22020, 24589, 25690, 28140, 30828, 38535, 44040, 49178, 51380, 56280, 61656, 73767, 77070, 98356, 102760, 122945, 147534, 154140, 172123, 196712, 245890, 295068, 308280, 344246, 368835, 491780, 516369, 590136, 688492, 737670, 860615, 983560, 1032738, 1376984, 1475340, 1721230, 2065476, 2581845, 2950680, 3442460, 4130952, 5163690, 6884920, 10327380, 20654760]

約数ペア:

[(1, 20654760), (2, 10327380), (3, 6884920), (4, 5163690), (5, 4130952), (6, 3442460), (7, 2950680), (8, 2581845), (10, 2065476), (12, 1721230), (14, 1475340), (15, 1376984), (20, 1032738), (21, 983560), (24, 860615), (28, 737670), (30, 688492), (35, 590136), (40, 516369), (42, 491780), (56, 368835), (60, 344246), (67, 308280), (70, 295068), (84, 245890), (105, 196712), (120, 172123), (134, 154140), (140, 147534), (168, 122945), (201, 102760), (210, 98356), (268, 77070), (280, 73767), (335, 61656), (367, 56280), (402, 51380), (420, 49178), (469, 44040), (536, 38535), (670, 30828), (734, 28140), (804, 25690), (840, 24589), (938, 22020), (1005, 20552), (1101, 18760), (1340, 15414), (1407, 14680), (1468, 14070), (1608, 12845), (1835, 11256), (1876, 11010), (2010, 10276), (2202, 9380), (2345, 8808), (2569, 8040), (2680, 7707), (2814, 7340), (2936, 7035), (3670, 5628), (3752, 5505), (4020, 5138), (4404, 4690)]