21212778

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{2549}}^1$

素因数の和:2646

約数の個数: 32

約数和(自身を含む): 45288000

約数和(自身を除く): 24075222

約数列:

[1, 2, 3, 6, 19, 38, 57, 73, 114, 146, 219, 438, 1387, 2549, 2774, 4161, 5098, 7647, 8322, 15294, 48431, 96862, 145293, 186077, 290586, 372154, 558231, 1116462, 3535463, 7070926, 10606389, 21212778]

約数ペア:

[(1, 21212778), (2, 10606389), (3, 7070926), (6, 3535463), (19, 1116462), (38, 558231), (57, 372154), (73, 290586), (114, 186077), (146, 145293), (219, 96862), (438, 48431), (1387, 15294), (2549, 8322), (2774, 7647), (4161, 5098)]