2007990125

素因数分解:

$5^3\times {\mathrm{31}}^1\times {\mathrm{518191}}^1$

素因数の和:518237

約数の個数: 16

約数和(自身を含む): 2586814464

約数和(自身を除く): 578824339

約数列:

[1, 5, 25, 31, 125, 155, 775, 3875, 518191, 2590955, 12954775, 16063921, 64773875, 80319605, 401598025, 2007990125]

約数ペア:

[(1, 2007990125), (5, 401598025), (25, 80319605), (31, 64773875), (125, 16063921), (155, 12954775), (775, 2590955), (3875, 518191)]