21121870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{27431}}^1$

素因数の和:27456

約数の個数: 32

約数和(自身を含む): 47402496

約数和(自身を除く): 26280626

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770, 27431, 54862, 137155, 192017, 274310, 301741, 384034, 603482, 960085, 1508705, 1920170, 2112187, 3017410, 4224374, 10560935, 21121870]

約数ペア:

[(1, 21121870), (2, 10560935), (5, 4224374), (7, 3017410), (10, 2112187), (11, 1920170), (14, 1508705), (22, 960085), (35, 603482), (55, 384034), (70, 301741), (77, 274310), (110, 192017), (154, 137155), (385, 54862), (770, 27431)]