28190043

素因数分解:

$3^2\times 7^2\times {\mathrm{97}}^1\times {\mathrm{659}}^1$

素因数の和:776

約数の個数: 36

約数和(自身を含む): 47927880

約数和(自身を除く): 19737837

約数列:

[1, 3, 7, 9, 21, 49, 63, 97, 147, 291, 441, 659, 679, 873, 1977, 2037, 4613, 4753, 5931, 6111, 13839, 14259, 32291, 41517, 42777, 63923, 96873, 191769, 290619, 447461, 575307, 1342383, 3132227, 4027149, 9396681, 28190043]

約数ペア:

[(1, 28190043), (3, 9396681), (7, 4027149), (9, 3132227), (21, 1342383), (49, 575307), (63, 447461), (97, 290619), (147, 191769), (291, 96873), (441, 63923), (659, 42777), (679, 41517), (873, 32291), (1977, 14259), (2037, 13839), (4613, 6111), (4753, 5931)]