21988725

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{2423}}^1$

素因数の和:2458

約数の個数: 36

約数和(自身を含む): 39976608

約数和(自身を除く): 17987883

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 121, 165, 275, 363, 605, 825, 1815, 2423, 3025, 7269, 9075, 12115, 26653, 36345, 60575, 79959, 133265, 181725, 293183, 399795, 666325, 879549, 1465915, 1998975, 4397745, 7329575, 21988725]

約数ペア:

[(1, 21988725), (3, 7329575), (5, 4397745), (11, 1998975), (15, 1465915), (25, 879549), (33, 666325), (55, 399795), (75, 293183), (121, 181725), (165, 133265), (275, 79959), (363, 60575), (605, 36345), (825, 26653), (1815, 12115), (2423, 9075), (3025, 7269)]