638968

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:207

約数の個数: 32

約数和(自身を含む): 1341360

約数和(自身を除く): 702392

約数列:

[1, 2, 4, 8, 11, 22, 44, 53, 88, 106, 137, 212, 274, 424, 548, 583, 1096, 1166, 1507, 2332, 3014, 4664, 6028, 7261, 12056, 14522, 29044, 58088, 79871, 159742, 319484, 638968]

約数ペア:

[(1, 638968), (2, 319484), (4, 159742), (8, 79871), (11, 58088), (22, 29044), (44, 14522), (53, 12056), (88, 7261), (106, 6028), (137, 4664), (212, 3014), (274, 2332), (424, 1507), (548, 1166), (583, 1096)]