31999401

素因数分解:

$3^3\times 7^2\times {\mathrm{19}}^2\times {\mathrm{67}}^1$

素因数の和:128

約数の個数: 72

約数和(自身を含む): 59070240

約数和(自身を除く): 27070839

約数列:

[1, 3, 7, 9, 19, 21, 27, 49, 57, 63, 67, 133, 147, 171, 189, 201, 361, 399, 441, 469, 513, 603, 931, 1083, 1197, 1273, 1323, 1407, 1809, 2527, 2793, 3249, 3283, 3591, 3819, 4221, 7581, 8379, 8911, 9747, 9849, 11457, 12663, 17689, 22743, 24187, 25137, 26733, 29547, 34371, 53067, 62377, 68229, 72561, 80199, 88641, 159201, 169309, 187131, 217683, 240597, 477603, 507927, 561393, 653049, 1185163, 1523781, 1684179, 3555489, 4571343, 10666467, 31999401]

約数ペア:

[(1, 31999401), (3, 10666467), (7, 4571343), (9, 3555489), (19, 1684179), (21, 1523781), (27, 1185163), (49, 653049), (57, 561393), (63, 507927), (67, 477603), (133, 240597), (147, 217683), (171, 187131), (189, 169309), (201, 159201), (361, 88641), (399, 80199), (441, 72561), (469, 68229), (513, 62377), (603, 53067), (931, 34371), (1083, 29547), (1197, 26733), (1273, 25137), (1323, 24187), (1407, 22743), (1809, 17689), (2527, 12663), (2793, 11457), (3249, 9849), (3283, 9747), (3591, 8911), (3819, 8379), (4221, 7581)]