31503920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{557}}^1$

素因数の和:678

約数の個数: 80

約数和(自身を含む): 84691008

約数和(自身を除く): 53187088

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 101, 112, 140, 202, 280, 404, 505, 557, 560, 707, 808, 1010, 1114, 1414, 1616, 2020, 2228, 2785, 2828, 3535, 3899, 4040, 4456, 5570, 5656, 7070, 7798, 8080, 8912, 11140, 11312, 14140, 15596, 19495, 22280, 28280, 31192, 38990, 44560, 56257, 56560, 62384, 77980, 112514, 155960, 225028, 281285, 311920, 393799, 450056, 562570, 787598, 900112, 1125140, 1575196, 1968995, 2250280, 3150392, 3937990, 4500560, 6300784, 7875980, 15751960, 31503920]

約数ペア:

[(1, 31503920), (2, 15751960), (4, 7875980), (5, 6300784), (7, 4500560), (8, 3937990), (10, 3150392), (14, 2250280), (16, 1968995), (20, 1575196), (28, 1125140), (35, 900112), (40, 787598), (56, 562570), (70, 450056), (80, 393799), (101, 311920), (112, 281285), (140, 225028), (202, 155960), (280, 112514), (404, 77980), (505, 62384), (557, 56560), (560, 56257), (707, 44560), (808, 38990), (1010, 31192), (1114, 28280), (1414, 22280), (1616, 19495), (2020, 15596), (2228, 14140), (2785, 11312), (2828, 11140), (3535, 8912), (3899, 8080), (4040, 7798), (4456, 7070), (5570, 5656)]