19735989

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 33449472

約数和(自身を除く): 13713483

約数列:

[1, 3, 7, 13, 21, 39, 67, 83, 91, 169, 201, 249, 273, 469, 507, 581, 871, 1079, 1183, 1407, 1743, 2613, 3237, 3549, 5561, 6097, 7553, 11323, 14027, 16683, 18291, 22659, 33969, 38927, 42081, 72293, 79261, 98189, 116781, 216879, 237783, 294567, 506051, 939809, 1518153, 2819427, 6578663, 19735989]

約数ペア:

[(1, 19735989), (3, 6578663), (7, 2819427), (13, 1518153), (21, 939809), (39, 506051), (67, 294567), (83, 237783), (91, 216879), (169, 116781), (201, 98189), (249, 79261), (273, 72293), (469, 42081), (507, 38927), (581, 33969), (871, 22659), (1079, 18291), (1183, 16683), (1407, 14027), (1743, 11323), (2613, 7553), (3237, 6097), (3549, 5561)]