19487065

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{509}}^1$

素因数の和:577

約数の個数: 32

約数和(自身を含む): 27417600

約数和(自身を除く): 7930535

約数列:

[1, 5, 13, 19, 31, 65, 95, 155, 247, 403, 509, 589, 1235, 2015, 2545, 2945, 6617, 7657, 9671, 15779, 33085, 38285, 48355, 78895, 125723, 205127, 299801, 628615, 1025635, 1499005, 3897413, 19487065]

約数ペア:

[(1, 19487065), (5, 3897413), (13, 1499005), (19, 1025635), (31, 628615), (65, 299801), (95, 205127), (155, 125723), (247, 78895), (403, 48355), (509, 38285), (589, 33085), (1235, 15779), (2015, 9671), (2545, 7657), (2945, 6617)]