20683280

素因数分解:

$2^4\times 5^1\times {\mathrm{229}}^1\times {\mathrm{1129}}^1$

素因数の和:1371

約数の個数: 40

約数和(自身を含む): 48341400

約数和(自身を除く): 27658120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 229, 458, 916, 1129, 1145, 1832, 2258, 2290, 3664, 4516, 4580, 5645, 9032, 9160, 11290, 18064, 18320, 22580, 45160, 90320, 258541, 517082, 1034164, 1292705, 2068328, 2585410, 4136656, 5170820, 10341640, 20683280]

約数ペア:

[(1, 20683280), (2, 10341640), (4, 5170820), (5, 4136656), (8, 2585410), (10, 2068328), (16, 1292705), (20, 1034164), (40, 517082), (80, 258541), (229, 90320), (458, 45160), (916, 22580), (1129, 18320), (1145, 18064), (1832, 11290), (2258, 9160), (2290, 9032), (3664, 5645), (4516, 4580)]