261285784

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{997}}^1$

素因数の和:1108

約数の個数: 64

約数和(自身を含む): 543231360

約数和(自身を除く): 281945576

約数列:

[1, 2, 4, 8, 17, 34, 41, 47, 68, 82, 94, 136, 164, 188, 328, 376, 697, 799, 997, 1394, 1598, 1927, 1994, 2788, 3196, 3854, 3988, 5576, 6392, 7708, 7976, 15416, 16949, 32759, 33898, 40877, 46859, 65518, 67796, 81754, 93718, 131036, 135592, 163508, 187436, 262072, 327016, 374872, 694909, 796603, 1389818, 1593206, 1921219, 2779636, 3186412, 3842438, 5559272, 6372824, 7684876, 15369752, 32660723, 65321446, 130642892, 261285784]

約数ペア:

[(1, 261285784), (2, 130642892), (4, 65321446), (8, 32660723), (17, 15369752), (34, 7684876), (41, 6372824), (47, 5559272), (68, 3842438), (82, 3186412), (94, 2779636), (136, 1921219), (164, 1593206), (188, 1389818), (328, 796603), (376, 694909), (697, 374872), (799, 327016), (997, 262072), (1394, 187436), (1598, 163508), (1927, 135592), (1994, 131036), (2788, 93718), (3196, 81754), (3854, 67796), (3988, 65518), (5576, 46859), (6392, 40877), (7708, 33898), (7976, 32759), (15416, 16949)]