21811845

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{811}}^1$

素因数の和:993

約数の個数: 32

約数和(自身を含む): 38352384

約数和(自身を除く): 16540539

約数列:

[1, 3, 5, 11, 15, 33, 55, 163, 165, 489, 811, 815, 1793, 2433, 2445, 4055, 5379, 8921, 8965, 12165, 26763, 26895, 44605, 132193, 133815, 396579, 660965, 1454123, 1982895, 4362369, 7270615, 21811845]

約数ペア:

[(1, 21811845), (3, 7270615), (5, 4362369), (11, 1982895), (15, 1454123), (33, 660965), (55, 396579), (163, 133815), (165, 132193), (489, 44605), (811, 26895), (815, 26763), (1793, 12165), (2433, 8965), (2445, 8921), (4055, 5379)]