217973259

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{673}}^1$

素因数の和:836

約数の個数: 48

約数和(自身を含む): 370948032

約数和(自身を除く): 152974773

約数列:

[1, 3, 7, 9, 21, 53, 63, 97, 159, 291, 371, 477, 673, 679, 873, 1113, 2019, 2037, 3339, 4711, 5141, 6057, 6111, 14133, 15423, 35669, 35987, 42399, 46269, 65281, 107007, 107961, 195843, 249683, 321021, 323883, 456967, 587529, 749049, 1370901, 2247147, 3459893, 4112703, 10379679, 24219251, 31139037, 72657753, 217973259]

約数ペア:

[(1, 217973259), (3, 72657753), (7, 31139037), (9, 24219251), (21, 10379679), (53, 4112703), (63, 3459893), (97, 2247147), (159, 1370901), (291, 749049), (371, 587529), (477, 456967), (673, 323883), (679, 321021), (873, 249683), (1113, 195843), (2019, 107961), (2037, 107007), (3339, 65281), (4711, 46269), (5141, 42399), (6057, 35987), (6111, 35669), (14133, 15423)]