28557828

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{439}}^1$

素因数の和:601

約数の個数: 72

約数和(自身を含む): 78478400

約数和(自身を除く): 49920572

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 139, 156, 234, 278, 417, 439, 468, 556, 834, 878, 1251, 1317, 1668, 1756, 1807, 2502, 2634, 3614, 3951, 5004, 5268, 5421, 5707, 7228, 7902, 10842, 11414, 15804, 16263, 17121, 21684, 22828, 32526, 34242, 51363, 61021, 65052, 68484, 102726, 122042, 183063, 205452, 244084, 366126, 549189, 732252, 793273, 1098378, 1586546, 2196756, 2379819, 3173092, 4759638, 7139457, 9519276, 14278914, 28557828]

約数ペア:

[(1, 28557828), (2, 14278914), (3, 9519276), (4, 7139457), (6, 4759638), (9, 3173092), (12, 2379819), (13, 2196756), (18, 1586546), (26, 1098378), (36, 793273), (39, 732252), (52, 549189), (78, 366126), (117, 244084), (139, 205452), (156, 183063), (234, 122042), (278, 102726), (417, 68484), (439, 65052), (468, 61021), (556, 51363), (834, 34242), (878, 32526), (1251, 22828), (1317, 21684), (1668, 17121), (1756, 16263), (1807, 15804), (2502, 11414), (2634, 10842), (3614, 7902), (3951, 7228), (5004, 5707), (5268, 5421)]