17891440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{743}}^1$

素因数の和:806

約数の個数: 80

約数和(自身を含む): 48711168

約数和(自身を除く): 30819728

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 43, 56, 70, 80, 86, 112, 140, 172, 215, 280, 301, 344, 430, 560, 602, 688, 743, 860, 1204, 1486, 1505, 1720, 2408, 2972, 3010, 3440, 3715, 4816, 5201, 5944, 6020, 7430, 10402, 11888, 12040, 14860, 20804, 24080, 26005, 29720, 31949, 41608, 52010, 59440, 63898, 83216, 104020, 127796, 159745, 208040, 223643, 255592, 319490, 416080, 447286, 511184, 638980, 894572, 1118215, 1277960, 1789144, 2236430, 2555920, 3578288, 4472860, 8945720, 17891440]

約数ペア:

[(1, 17891440), (2, 8945720), (4, 4472860), (5, 3578288), (7, 2555920), (8, 2236430), (10, 1789144), (14, 1277960), (16, 1118215), (20, 894572), (28, 638980), (35, 511184), (40, 447286), (43, 416080), (56, 319490), (70, 255592), (80, 223643), (86, 208040), (112, 159745), (140, 127796), (172, 104020), (215, 83216), (280, 63898), (301, 59440), (344, 52010), (430, 41608), (560, 31949), (602, 29720), (688, 26005), (743, 24080), (860, 20804), (1204, 14860), (1486, 12040), (1505, 11888), (1720, 10402), (2408, 7430), (2972, 6020), (3010, 5944), (3440, 5201), (3715, 4816)]