20502855

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{5237}}^1$

素因数の和:5280

約数の個数: 32

約数和(自身を含む): 37713600

約数和(自身を除く): 17210745

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 87, 135, 145, 261, 435, 783, 1305, 3915, 5237, 15711, 26185, 47133, 78555, 141399, 151873, 235665, 455619, 706995, 759365, 1366857, 2278095, 4100571, 6834285, 20502855]

約数ペア:

[(1, 20502855), (3, 6834285), (5, 4100571), (9, 2278095), (15, 1366857), (27, 759365), (29, 706995), (45, 455619), (87, 235665), (135, 151873), (145, 141399), (261, 78555), (435, 47133), (783, 26185), (1305, 15711), (3915, 5237)]