21604700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{16619}}^1$

素因数の和:16646

約数の個数: 36

約数和(自身を含む): 50491560

約数和(自身を除く): 28886860

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 16619, 33238, 66476, 83095, 166190, 216047, 332380, 415475, 432094, 830950, 864188, 1080235, 1661900, 2160470, 4320940, 5401175, 10802350, 21604700]

約数ペア:

[(1, 21604700), (2, 10802350), (4, 5401175), (5, 4320940), (10, 2160470), (13, 1661900), (20, 1080235), (25, 864188), (26, 830950), (50, 432094), (52, 415475), (65, 332380), (100, 216047), (130, 166190), (260, 83095), (325, 66476), (650, 33238), (1300, 16619)]