81191915

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{2237}}^1$

素因数の和:2327

約数の個数: 32

約数和(自身を含む): 119885184

約数和(自身を除く): 38693269

約数列:

[1, 5, 7, 17, 35, 61, 85, 119, 305, 427, 595, 1037, 2135, 2237, 5185, 7259, 11185, 15659, 36295, 38029, 78295, 136457, 190145, 266203, 682285, 955199, 1331015, 2319769, 4775995, 11598845, 16238383, 81191915]

約数ペア:

[(1, 81191915), (5, 16238383), (7, 11598845), (17, 4775995), (35, 2319769), (61, 1331015), (85, 955199), (119, 682285), (305, 266203), (427, 190145), (595, 136457), (1037, 78295), (2135, 38029), (2237, 36295), (5185, 15659), (7259, 11185)]