42781420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{1399}}^1$

素因数の和:1558

約数の個数: 48

約数和(自身を含む): 98784000

約数和(自身を除く): 56002580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 139, 220, 278, 556, 695, 1390, 1399, 1529, 2780, 2798, 3058, 5596, 6116, 6995, 7645, 13990, 15290, 15389, 27980, 30580, 30778, 61556, 76945, 153890, 194461, 307780, 388922, 777844, 972305, 1944610, 2139071, 3889220, 4278142, 8556284, 10695355, 21390710, 42781420]

約数ペア:

[(1, 42781420), (2, 21390710), (4, 10695355), (5, 8556284), (10, 4278142), (11, 3889220), (20, 2139071), (22, 1944610), (44, 972305), (55, 777844), (110, 388922), (139, 307780), (220, 194461), (278, 153890), (556, 76945), (695, 61556), (1390, 30778), (1399, 30580), (1529, 27980), (2780, 15389), (2798, 15290), (3058, 13990), (5596, 7645), (6116, 6995)]