199909805

素因数分解:

$5^1\times {\mathrm{101}}^1\times {\mathrm{503}}^1\times {\mathrm{787}}^1$

素因数の和:1396

約数の個数: 16

約数和(自身を含む): 243057024

約数和(自身を除く): 43147219

約数列:

[1, 5, 101, 503, 505, 787, 2515, 3935, 50803, 79487, 254015, 395861, 397435, 1979305, 39981961, 199909805]

約数ペア:

[(1, 199909805), (5, 39981961), (101, 1979305), (503, 397435), (505, 395861), (787, 254015), (2515, 79487), (3935, 50803)]