21099760

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23977}}^1$

素因数の和:24001

約数の個数: 40

約数和(自身を含む): 53518896

約数和(自身を除く): 32419136

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23977, 47954, 95908, 119885, 191816, 239770, 263747, 383632, 479540, 527494, 959080, 1054988, 1318735, 1918160, 2109976, 2637470, 4219952, 5274940, 10549880, 21099760]

約数ペア:

[(1, 21099760), (2, 10549880), (4, 5274940), (5, 4219952), (8, 2637470), (10, 2109976), (11, 1918160), (16, 1318735), (20, 1054988), (22, 959080), (40, 527494), (44, 479540), (55, 383632), (80, 263747), (88, 239770), (110, 191816), (176, 119885), (220, 95908), (440, 47954), (880, 23977)]