201991839

素因数分解:

$3^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{43133}}^1$

素因数の和:43366

約数の個数: 16

約数和(自身を含む): 309184512

約数和(自身を除く): 107192673

約数列:

[1, 3, 7, 21, 223, 669, 1561, 4683, 43133, 129399, 301931, 905793, 9618659, 28855977, 67330613, 201991839]

約数ペア:

[(1, 201991839), (3, 67330613), (7, 28855977), (21, 9618659), (223, 905793), (669, 301931), (1561, 129399), (4683, 43133)]