21118454

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{997}}^1$

素因数の和:1112

約数の個数: 32

約数和(自身を含む): 38802240

約数和(自身を除く): 17683786

約数列:

[1, 2, 7, 14, 17, 34, 89, 119, 178, 238, 623, 997, 1246, 1513, 1994, 3026, 6979, 10591, 13958, 16949, 21182, 33898, 88733, 118643, 177466, 237286, 621131, 1242262, 1508461, 3016922, 10559227, 21118454]

約数ペア:

[(1, 21118454), (2, 10559227), (7, 3016922), (14, 1508461), (17, 1242262), (34, 621131), (89, 237286), (119, 177466), (178, 118643), (238, 88733), (623, 33898), (997, 21182), (1246, 16949), (1513, 13958), (1994, 10591), (3026, 6979)]