21499520

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{4799}}^1$

素因数の和:4825

約数の個数: 64

約数和(自身を含む): 58752000

約数和(自身を除く): 37252480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 4799, 9598, 19196, 23995, 33593, 38392, 47990, 67186, 76784, 95980, 134372, 153568, 167965, 191960, 268744, 307136, 335930, 383920, 537488, 614272, 671860, 767840, 1074976, 1343720, 1535680, 2149952, 2687440, 3071360, 4299904, 5374880, 10749760, 21499520]

約数ペア:

[(1, 21499520), (2, 10749760), (4, 5374880), (5, 4299904), (7, 3071360), (8, 2687440), (10, 2149952), (14, 1535680), (16, 1343720), (20, 1074976), (28, 767840), (32, 671860), (35, 614272), (40, 537488), (56, 383920), (64, 335930), (70, 307136), (80, 268744), (112, 191960), (128, 167965), (140, 153568), (160, 134372), (224, 95980), (280, 76784), (320, 67186), (448, 47990), (560, 38392), (640, 33593), (896, 23995), (1120, 19196), (2240, 9598), (4480, 4799)]