28788921

素因数分解:

$3^2\times 7^2\times {\mathrm{97}}^1\times {\mathrm{673}}^1$

素因数の和:790

約数の個数: 36

約数和(自身を含む): 48944532

約数和(自身を除く): 20155611

約数列:

[1, 3, 7, 9, 21, 49, 63, 97, 147, 291, 441, 673, 679, 873, 2019, 2037, 4711, 4753, 6057, 6111, 14133, 14259, 32977, 42399, 42777, 65281, 98931, 195843, 296793, 456967, 587529, 1370901, 3198769, 4112703, 9596307, 28788921]

約数ペア:

[(1, 28788921), (3, 9596307), (7, 4112703), (9, 3198769), (21, 1370901), (49, 587529), (63, 456967), (97, 296793), (147, 195843), (291, 98931), (441, 65281), (673, 42777), (679, 42399), (873, 32977), (2019, 14259), (2037, 14133), (4711, 6111), (4753, 6057)]