640960592

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{31469}}^1$

素因数の和:31563

約数の個数: 40

約数和(自身を含む): 1326775200

約数和(自身を除く): 685814608

約数列:

[1, 2, 4, 8, 16, 19, 38, 67, 76, 134, 152, 268, 304, 536, 1072, 1273, 2546, 5092, 10184, 20368, 31469, 62938, 125876, 251752, 503504, 597911, 1195822, 2108423, 2391644, 4216846, 4783288, 8433692, 9566576, 16867384, 33734768, 40060037, 80120074, 160240148, 320480296, 640960592]

約数ペア:

[(1, 640960592), (2, 320480296), (4, 160240148), (8, 80120074), (16, 40060037), (19, 33734768), (38, 16867384), (67, 9566576), (76, 8433692), (134, 4783288), (152, 4216846), (268, 2391644), (304, 2108423), (536, 1195822), (1072, 597911), (1273, 503504), (2546, 251752), (5092, 125876), (10184, 62938), (20368, 31469)]