19946720

素因数分解:

$2^5\times 5^1\times {\mathrm{59}}^1\times {\mathrm{2113}}^1$

素因数の和:2187

約数の個数: 48

約数和(自身を含む): 47945520

約数和(自身を除く): 27998800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 59, 80, 118, 160, 236, 295, 472, 590, 944, 1180, 1888, 2113, 2360, 4226, 4720, 8452, 9440, 10565, 16904, 21130, 33808, 42260, 67616, 84520, 124667, 169040, 249334, 338080, 498668, 623335, 997336, 1246670, 1994672, 2493340, 3989344, 4986680, 9973360, 19946720]

約数ペア:

[(1, 19946720), (2, 9973360), (4, 4986680), (5, 3989344), (8, 2493340), (10, 1994672), (16, 1246670), (20, 997336), (32, 623335), (40, 498668), (59, 338080), (80, 249334), (118, 169040), (160, 124667), (236, 84520), (295, 67616), (472, 42260), (590, 33808), (944, 21130), (1180, 16904), (1888, 10565), (2113, 9440), (2360, 8452), (4226, 4720)]