19999072

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{379}}^1$

素因数の和:503

約数の個数: 48

約数和(自身を含む): 42230160

約数和(自身を除く): 22231088

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 97, 136, 194, 272, 379, 388, 544, 758, 776, 1516, 1552, 1649, 3032, 3104, 3298, 6064, 6443, 6596, 12128, 12886, 13192, 25772, 26384, 36763, 51544, 52768, 73526, 103088, 147052, 206176, 294104, 588208, 624971, 1176416, 1249942, 2499884, 4999768, 9999536, 19999072]

約数ペア:

[(1, 19999072), (2, 9999536), (4, 4999768), (8, 2499884), (16, 1249942), (17, 1176416), (32, 624971), (34, 588208), (68, 294104), (97, 206176), (136, 147052), (194, 103088), (272, 73526), (379, 52768), (388, 51544), (544, 36763), (758, 26384), (776, 25772), (1516, 13192), (1552, 12886), (1649, 12128), (3032, 6596), (3104, 6443), (3298, 6064)]