71628940

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{181}}^1\times {\mathrm{421}}^1$

素因数の和:658

約数の個数: 48

約数和(自身を含む): 154836864

約数和(自身を除く): 83207924

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 181, 188, 235, 362, 421, 470, 724, 842, 905, 940, 1684, 1810, 2105, 3620, 4210, 8420, 8507, 17014, 19787, 34028, 39574, 42535, 76201, 79148, 85070, 98935, 152402, 170140, 197870, 304804, 381005, 395740, 762010, 1524020, 3581447, 7162894, 14325788, 17907235, 35814470, 71628940]

約数ペア:

[(1, 71628940), (2, 35814470), (4, 17907235), (5, 14325788), (10, 7162894), (20, 3581447), (47, 1524020), (94, 762010), (181, 395740), (188, 381005), (235, 304804), (362, 197870), (421, 170140), (470, 152402), (724, 98935), (842, 85070), (905, 79148), (940, 76201), (1684, 42535), (1810, 39574), (2105, 34028), (3620, 19787), (4210, 17014), (8420, 8507)]