20985192

素因数分解:

$2^3\times 3^2\times {\mathrm{223}}^1\times {\mathrm{1307}}^1$

素因数の和:1542

約数の個数: 48

約数和(自身を含む): 57133440

約数和(自身を除く): 36148248

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 223, 446, 669, 892, 1307, 1338, 1784, 2007, 2614, 2676, 3921, 4014, 5228, 5352, 7842, 8028, 10456, 11763, 15684, 16056, 23526, 31368, 47052, 94104, 291461, 582922, 874383, 1165844, 1748766, 2331688, 2623149, 3497532, 5246298, 6995064, 10492596, 20985192]

約数ペア:

[(1, 20985192), (2, 10492596), (3, 6995064), (4, 5246298), (6, 3497532), (8, 2623149), (9, 2331688), (12, 1748766), (18, 1165844), (24, 874383), (36, 582922), (72, 291461), (223, 94104), (446, 47052), (669, 31368), (892, 23526), (1307, 16056), (1338, 15684), (1784, 11763), (2007, 10456), (2614, 8028), (2676, 7842), (3921, 5352), (4014, 5228)]