257560360

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{157049}}^1$

素因数の和:157101

約数の個数: 32

約数和(自身を含む): 593649000

約数和(自身を除く): 336088640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 157049, 314098, 628196, 785245, 1256392, 1570490, 3140980, 6281960, 6439009, 12878018, 25756036, 32195045, 51512072, 64390090, 128780180, 257560360]

約数ペア:

[(1, 257560360), (2, 128780180), (4, 64390090), (5, 51512072), (8, 32195045), (10, 25756036), (20, 12878018), (40, 6439009), (41, 6281960), (82, 3140980), (164, 1570490), (205, 1256392), (328, 785245), (410, 628196), (820, 314098), (1640, 157049)]