21788590

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{1553}}^1$

素因数の和:1644

約数の個数: 32

約数和(自身を含む): 41622336

約数和(自身を除く): 19833746

約数列:

[1, 2, 5, 10, 23, 46, 61, 115, 122, 230, 305, 610, 1403, 1553, 2806, 3106, 7015, 7765, 14030, 15530, 35719, 71438, 94733, 178595, 189466, 357190, 473665, 947330, 2178859, 4357718, 10894295, 21788590]

約数ペア:

[(1, 21788590), (2, 10894295), (5, 4357718), (10, 2178859), (23, 947330), (46, 473665), (61, 357190), (115, 189466), (122, 178595), (230, 94733), (305, 71438), (610, 35719), (1403, 15530), (1553, 14030), (2806, 7765), (3106, 7015)]