81805545

素因数分解:

$3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{10631}}^1$

素因数の和:10667

約数の個数: 40

約数和(自身を含む): 154376640

約数和(自身を除く): 72571095

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 135, 171, 285, 405, 513, 855, 1539, 2565, 7695, 10631, 31893, 53155, 95679, 159465, 201989, 287037, 478395, 605967, 861111, 1009945, 1435185, 1817901, 3029835, 4305555, 5453703, 9089505, 16361109, 27268515, 81805545]

約数ペア:

[(1, 81805545), (3, 27268515), (5, 16361109), (9, 9089505), (15, 5453703), (19, 4305555), (27, 3029835), (45, 1817901), (57, 1435185), (81, 1009945), (95, 861111), (135, 605967), (171, 478395), (285, 287037), (405, 201989), (513, 159465), (855, 95679), (1539, 53155), (2565, 31893), (7695, 10631)]