21673190

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{4021}}^1$

素因数の和:4053

約数の個数: 48

約数和(自身を含む): 49518864

約数和(自身を除く): 27845674

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 49, 55, 70, 77, 98, 110, 154, 245, 385, 490, 539, 770, 1078, 2695, 4021, 5390, 8042, 20105, 28147, 40210, 44231, 56294, 88462, 140735, 197029, 221155, 281470, 309617, 394058, 442310, 619234, 985145, 1548085, 1970290, 2167319, 3096170, 4334638, 10836595, 21673190]

約数ペア:

[(1, 21673190), (2, 10836595), (5, 4334638), (7, 3096170), (10, 2167319), (11, 1970290), (14, 1548085), (22, 985145), (35, 619234), (49, 442310), (55, 394058), (70, 309617), (77, 281470), (98, 221155), (110, 197029), (154, 140735), (245, 88462), (385, 56294), (490, 44231), (539, 40210), (770, 28147), (1078, 20105), (2695, 8042), (4021, 5390)]