21099880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27763}}^1$

素因数の和:27793

約数の個数: 32

約数和(自身を含む): 49975200

約数和(自身を除く): 28875320

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27763, 55526, 111052, 138815, 222104, 277630, 527497, 555260, 1054994, 1110520, 2109988, 2637485, 4219976, 5274970, 10549940, 21099880]

約数ペア:

[(1, 21099880), (2, 10549940), (4, 5274970), (5, 4219976), (8, 2637485), (10, 2109988), (19, 1110520), (20, 1054994), (38, 555260), (40, 527497), (76, 277630), (95, 222104), (152, 138815), (190, 111052), (380, 55526), (760, 27763)]