71231260

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{179}}^1\times {\mathrm{197}}^1$

素因数の和:486

約数の個数: 48

約数和(自身を含む): 152681760

約数和(自身を除く): 81450500

約数列:

[1, 2, 4, 5, 10, 20, 101, 179, 197, 202, 358, 394, 404, 505, 716, 788, 895, 985, 1010, 1790, 1970, 2020, 3580, 3940, 18079, 19897, 35263, 36158, 39794, 70526, 72316, 79588, 90395, 99485, 141052, 176315, 180790, 198970, 352630, 361580, 397940, 705260, 3561563, 7123126, 14246252, 17807815, 35615630, 71231260]

約数ペア:

[(1, 71231260), (2, 35615630), (4, 17807815), (5, 14246252), (10, 7123126), (20, 3561563), (101, 705260), (179, 397940), (197, 361580), (202, 352630), (358, 198970), (394, 180790), (404, 176315), (505, 141052), (716, 99485), (788, 90395), (895, 79588), (985, 72316), (1010, 70526), (1790, 39794), (1970, 36158), (2020, 35263), (3580, 19897), (3940, 18079)]