21216250

素因数分解:

$2^1\times 5^4\times {\mathrm{11}}^1\times {\mathrm{1543}}^1$

素因数の和:1576

約数の個数: 40

約数和(自身を含む): 43411104

約数和(自身を除く): 22194854

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 125, 250, 275, 550, 625, 1250, 1375, 1543, 2750, 3086, 6875, 7715, 13750, 15430, 16973, 33946, 38575, 77150, 84865, 169730, 192875, 385750, 424325, 848650, 964375, 1928750, 2121625, 4243250, 10608125, 21216250]

約数ペア:

[(1, 21216250), (2, 10608125), (5, 4243250), (10, 2121625), (11, 1928750), (22, 964375), (25, 848650), (50, 424325), (55, 385750), (110, 192875), (125, 169730), (250, 84865), (275, 77150), (550, 38575), (625, 33946), (1250, 16973), (1375, 15430), (1543, 13750), (2750, 7715), (3086, 6875)]