20489672

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{127}}^1$

素因数の和:250

約数の個数: 64

約数和(自身を含む): 45957120

約数和(自身を除く): 25467448

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 56, 67, 86, 127, 134, 172, 254, 268, 301, 344, 469, 508, 536, 602, 889, 938, 1016, 1204, 1778, 1876, 2408, 2881, 3556, 3752, 5461, 5762, 7112, 8509, 10922, 11524, 17018, 20167, 21844, 23048, 34036, 38227, 40334, 43688, 59563, 68072, 76454, 80668, 119126, 152908, 161336, 238252, 305816, 365887, 476504, 731774, 1463548, 2561209, 2927096, 5122418, 10244836, 20489672]

約数ペア:

[(1, 20489672), (2, 10244836), (4, 5122418), (7, 2927096), (8, 2561209), (14, 1463548), (28, 731774), (43, 476504), (56, 365887), (67, 305816), (86, 238252), (127, 161336), (134, 152908), (172, 119126), (254, 80668), (268, 76454), (301, 68072), (344, 59563), (469, 43688), (508, 40334), (536, 38227), (602, 34036), (889, 23048), (938, 21844), (1016, 20167), (1204, 17018), (1778, 11524), (1876, 10922), (2408, 8509), (2881, 7112), (3556, 5762), (3752, 5461)]