39987920

素因数分解:

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

素因数の和:229

約数の個数: 90

約数和(自身を含む): 109232406

約数和(自身を除く): 69244486

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 101, 112, 140, 196, 202, 245, 280, 392, 404, 490, 505, 560, 707, 784, 808, 980, 1010, 1414, 1616, 1960, 2020, 2828, 3535, 3920, 4040, 4949, 5656, 7070, 8080, 9898, 10201, 11312, 14140, 19796, 20402, 24745, 28280, 39592, 40804, 49490, 51005, 56560, 71407, 79184, 81608, 98980, 102010, 142814, 163216, 197960, 204020, 285628, 357035, 395920, 408040, 499849, 571256, 714070, 816080, 999698, 1142512, 1428140, 1999396, 2499245, 2856280, 3998792, 4998490, 5712560, 7997584, 9996980, 19993960, 39987920]

約数ペア:

[(1, 39987920), (2, 19993960), (4, 9996980), (5, 7997584), (7, 5712560), (8, 4998490), (10, 3998792), (14, 2856280), (16, 2499245), (20, 1999396), (28, 1428140), (35, 1142512), (40, 999698), (49, 816080), (56, 714070), (70, 571256), (80, 499849), (98, 408040), (101, 395920), (112, 357035), (140, 285628), (196, 204020), (202, 197960), (245, 163216), (280, 142814), (392, 102010), (404, 98980), (490, 81608), (505, 79184), (560, 71407), (707, 56560), (784, 51005), (808, 49490), (980, 40804), (1010, 39592), (1414, 28280), (1616, 24745), (1960, 20402), (2020, 19796), (2828, 14140), (3535, 11312), (3920, 10201), (4040, 9898), (4949, 8080), (5656, 7070)]