999195320

素因数分解:

$2^3\times 5^1\times {\mathrm{4987}}^1\times {\mathrm{5009}}^1$

素因数の和:10007

約数の個数: 32

約数和(自身を含む): 2249089200

約数和(自身を除く): 1249893880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4987, 5009, 9974, 10018, 19948, 20036, 24935, 25045, 39896, 40072, 49870, 50090, 99740, 100180, 199480, 200360, 24979883, 49959766, 99919532, 124899415, 199839064, 249798830, 499597660, 999195320]

約数ペア:

[(1, 999195320), (2, 499597660), (4, 249798830), (5, 199839064), (8, 124899415), (10, 99919532), (20, 49959766), (40, 24979883), (4987, 200360), (5009, 199480), (9974, 100180), (10018, 99740), (19948, 50090), (20036, 49870), (24935, 40072), (25045, 39896)]