28881294

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:249

約数の個数: 64

約数和(自身を含む): 65049600

約数和(自身を除く): 36168306

約数列:

[1, 2, 3, 6, 13, 26, 39, 43, 78, 79, 86, 109, 129, 158, 218, 237, 258, 327, 474, 559, 654, 1027, 1118, 1417, 1677, 2054, 2834, 3081, 3354, 3397, 4251, 4687, 6162, 6794, 8502, 8611, 9374, 10191, 14061, 17222, 20382, 25833, 28122, 44161, 51666, 60931, 88322, 111943, 121862, 132483, 182793, 223886, 264966, 335829, 365586, 370273, 671658, 740546, 1110819, 2221638, 4813549, 9627098, 14440647, 28881294]

約数ペア:

[(1, 28881294), (2, 14440647), (3, 9627098), (6, 4813549), (13, 2221638), (26, 1110819), (39, 740546), (43, 671658), (78, 370273), (79, 365586), (86, 335829), (109, 264966), (129, 223886), (158, 182793), (218, 132483), (237, 121862), (258, 111943), (327, 88322), (474, 60931), (559, 51666), (654, 44161), (1027, 28122), (1118, 25833), (1417, 20382), (1677, 17222), (2054, 14061), (2834, 10191), (3081, 9374), (3354, 8611), (3397, 8502), (4251, 6794), (4687, 6162)]