20399984

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{3739}}^1$

素因数の和:3789

約数の個数: 40

約数和(自身を含む): 44520960

約数和(自身を除く): 24120976

約数列:

[1, 2, 4, 8, 11, 16, 22, 31, 44, 62, 88, 124, 176, 248, 341, 496, 682, 1364, 2728, 3739, 5456, 7478, 14956, 29912, 41129, 59824, 82258, 115909, 164516, 231818, 329032, 463636, 658064, 927272, 1274999, 1854544, 2549998, 5099996, 10199992, 20399984]

約数ペア:

[(1, 20399984), (2, 10199992), (4, 5099996), (8, 2549998), (11, 1854544), (16, 1274999), (22, 927272), (31, 658064), (44, 463636), (62, 329032), (88, 231818), (124, 164516), (176, 115909), (248, 82258), (341, 59824), (496, 41129), (682, 29912), (1364, 14956), (2728, 7478), (3739, 5456)]