30721075

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{15959}}^1$

素因数の和:15987

約数の個数: 24

約数和(自身を含む): 47496960

約数和(自身を除く): 16775885

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 175, 275, 385, 1925, 15959, 79795, 111713, 175549, 398975, 558565, 877745, 1228843, 2792825, 4388725, 6144215, 30721075]

約数ペア:

[(1, 30721075), (5, 6144215), (7, 4388725), (11, 2792825), (25, 1228843), (35, 877745), (55, 558565), (77, 398975), (175, 175549), (275, 111713), (385, 79795), (1925, 15959)]