205628120

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{125383}}^1$

素因数の和:125435

約数の個数: 32

約数和(自身を含む): 473951520

約数和(自身を除く): 268323400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 125383, 250766, 501532, 626915, 1003064, 1253830, 2507660, 5015320, 5140703, 10281406, 20562812, 25703515, 41125624, 51407030, 102814060, 205628120]

約数ペア:

[(1, 205628120), (2, 102814060), (4, 51407030), (5, 41125624), (8, 25703515), (10, 20562812), (20, 10281406), (40, 5140703), (41, 5015320), (82, 2507660), (164, 1253830), (205, 1003064), (328, 626915), (410, 501532), (820, 250766), (1640, 125383)]