20512990395

素因数分解:

$3^4\times 5^1\times {\mathrm{283}}^1\times {\mathrm{178973}}^1$

素因数の和:179273

約数の個数: 40

約数和(自身を含む): 36901575216

約数和(自身を除く): 16388584821

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 283, 405, 849, 1415, 2547, 4245, 7641, 12735, 22923, 38205, 114615, 178973, 536919, 894865, 1610757, 2684595, 4832271, 8053785, 14496813, 24161355, 50649359, 72484065, 151948077, 253246795, 455844231, 759740385, 1367532693, 2279221155, 4102598079, 6837663465, 20512990395]

約数ペア:

[(1, 20512990395), (3, 6837663465), (5, 4102598079), (9, 2279221155), (15, 1367532693), (27, 759740385), (45, 455844231), (81, 253246795), (135, 151948077), (283, 72484065), (405, 50649359), (849, 24161355), (1415, 14496813), (2547, 8053785), (4245, 4832271), (7641, 2684595), (12735, 1610757), (22923, 894865), (38205, 536919), (114615, 178973)]