20120513

素因数分解:

$7^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1\times {\mathrm{191}}^1$

素因数の和:448

約数の個数: 16

約数和(自身を含む): 23500800

約数和(自身を除く): 3380287

約数列:

[1, 7, 101, 149, 191, 707, 1043, 1337, 15049, 19291, 28459, 105343, 135037, 199213, 2874359, 20120513]

約数ペア:

[(1, 20120513), (7, 2874359), (101, 199213), (149, 135037), (191, 105343), (707, 28459), (1043, 19291), (1337, 15049)]