12905871

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 19657728

約数和(自身を除く): 6751857

約数列:

[1, 3, 11, 33, 47, 53, 141, 157, 159, 471, 517, 583, 1551, 1727, 1749, 2491, 5181, 7379, 7473, 8321, 22137, 24963, 27401, 81169, 82203, 91531, 243507, 274593, 391087, 1173261, 4301957, 12905871]

約数ペア:

[(1, 12905871), (3, 4301957), (11, 1173261), (33, 391087), (47, 274593), (53, 243507), (141, 91531), (157, 82203), (159, 81169), (471, 27401), (517, 24963), (583, 22137), (1551, 8321), (1727, 7473), (1749, 7379), (2491, 5181)]