19958090

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{68821}}^1$

素因数の和:68857

約数の個数: 16

約数和(自身を含む): 37163880

約数和(自身を除く): 17205790

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 68821, 137642, 344105, 688210, 1995809, 3991618, 9979045, 19958090]

約数ペア:

[(1, 19958090), (2, 9979045), (5, 3991618), (10, 1995809), (29, 688210), (58, 344105), (145, 137642), (290, 68821)]