721822101

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{1531}}^1$

素因数の和:1722

約数の個数: 64

約数和(自身を含む): 1301293056

約数和(自身を除く): 579470955

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 77, 91, 143, 157, 231, 273, 429, 471, 1001, 1099, 1531, 1727, 2041, 3003, 3297, 4593, 5181, 6123, 10717, 12089, 14287, 16841, 19903, 22451, 32151, 36267, 42861, 50523, 59709, 67353, 117887, 139321, 157157, 218933, 240367, 353661, 417963, 471471, 656799, 721101, 1532531, 1682569, 2644037, 3124771, 4597593, 5047707, 7932111, 9374313, 18508259, 21873397, 34372481, 55524777, 65620191, 103117443, 240607367, 721822101]

約数ペア:

[(1, 721822101), (3, 240607367), (7, 103117443), (11, 65620191), (13, 55524777), (21, 34372481), (33, 21873397), (39, 18508259), (77, 9374313), (91, 7932111), (143, 5047707), (157, 4597593), (231, 3124771), (273, 2644037), (429, 1682569), (471, 1532531), (1001, 721101), (1099, 656799), (1531, 471471), (1727, 417963), (2041, 353661), (3003, 240367), (3297, 218933), (4593, 157157), (5181, 139321), (6123, 117887), (10717, 67353), (12089, 59709), (14287, 50523), (16841, 42861), (19903, 36267), (22451, 32151)]