20572785

素因数分解:

$3^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{643}}^1$

素因数の和:739

約数の個数: 40

約数和(自身を含む): 37403520

約数和(自身を除く): 16830735

約数列:

[1, 3, 5, 9, 15, 27, 45, 79, 81, 135, 237, 395, 405, 643, 711, 1185, 1929, 2133, 3215, 3555, 5787, 6399, 9645, 10665, 17361, 28935, 31995, 50797, 52083, 86805, 152391, 253985, 260415, 457173, 761955, 1371519, 2285865, 4114557, 6857595, 20572785]

約数ペア:

[(1, 20572785), (3, 6857595), (5, 4114557), (9, 2285865), (15, 1371519), (27, 761955), (45, 457173), (79, 260415), (81, 253985), (135, 152391), (237, 86805), (395, 52083), (405, 50797), (643, 31995), (711, 28935), (1185, 17361), (1929, 10665), (2133, 9645), (3215, 6399), (3555, 5787)]