78819940

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{1181}}^1$

素因数の和:1308

約数の個数: 48

約数和(自身を含む): 171569664

約数和(自身を除く): 92749724

約数列:

[1, 2, 4, 5, 10, 20, 47, 71, 94, 142, 188, 235, 284, 355, 470, 710, 940, 1181, 1420, 2362, 3337, 4724, 5905, 6674, 11810, 13348, 16685, 23620, 33370, 55507, 66740, 83851, 111014, 167702, 222028, 277535, 335404, 419255, 555070, 838510, 1110140, 1677020, 3940997, 7881994, 15763988, 19704985, 39409970, 78819940]

約数ペア:

[(1, 78819940), (2, 39409970), (4, 19704985), (5, 15763988), (10, 7881994), (20, 3940997), (47, 1677020), (71, 1110140), (94, 838510), (142, 555070), (188, 419255), (235, 335404), (284, 277535), (355, 222028), (470, 167702), (710, 111014), (940, 83851), (1181, 66740), (1420, 55507), (2362, 33370), (3337, 23620), (4724, 16685), (5905, 13348), (6674, 11810)]