19909130

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{64223}}^1$

素因数の和:64261

約数の個数: 16

約数和(自身を含む): 36993024

約数和(自身を除く): 17083894

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 64223, 128446, 321115, 642230, 1990913, 3981826, 9954565, 19909130]

約数ペア:

[(1, 19909130), (2, 9954565), (5, 3981826), (10, 1990913), (31, 642230), (62, 321115), (155, 128446), (310, 64223)]