21007245

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{3391}}^1$

素因数の和:3465

約数の個数: 32

約数和(自身を含む): 39075840

約数和(自身を除く): 18068595

約数列:

[1, 3, 5, 7, 15, 21, 35, 59, 105, 177, 295, 413, 885, 1239, 2065, 3391, 6195, 10173, 16955, 23737, 50865, 71211, 118685, 200069, 356055, 600207, 1000345, 1400483, 3001035, 4201449, 7002415, 21007245]

約数ペア:

[(1, 21007245), (3, 7002415), (5, 4201449), (7, 3001035), (15, 1400483), (21, 1000345), (35, 600207), (59, 356055), (105, 200069), (177, 118685), (295, 71211), (413, 50865), (885, 23737), (1239, 16955), (2065, 10173), (3391, 6195)]