20038172

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:171

約数の個数: 96

約数和(自身を含む): 47900160

約数和(自身を除く): 27861988

約数列:

[1, 2, 4, 7, 11, 14, 17, 22, 28, 34, 43, 44, 68, 77, 86, 89, 119, 154, 172, 178, 187, 238, 301, 308, 356, 374, 473, 476, 602, 623, 731, 748, 946, 979, 1204, 1246, 1309, 1462, 1513, 1892, 1958, 2492, 2618, 2924, 3026, 3311, 3827, 3916, 5117, 5236, 6052, 6622, 6853, 7654, 8041, 10234, 10591, 13244, 13706, 15308, 16082, 16643, 20468, 21182, 26789, 27412, 32164, 33286, 42097, 42364, 53578, 56287, 65059, 66572, 84194, 107156, 112574, 116501, 130118, 168388, 225148, 233002, 260236, 294679, 455413, 466004, 589358, 715649, 910826, 1178716, 1431298, 1821652, 2862596, 5009543, 10019086, 20038172]

約数ペア:

[(1, 20038172), (2, 10019086), (4, 5009543), (7, 2862596), (11, 1821652), (14, 1431298), (17, 1178716), (22, 910826), (28, 715649), (34, 589358), (43, 466004), (44, 455413), (68, 294679), (77, 260236), (86, 233002), (89, 225148), (119, 168388), (154, 130118), (172, 116501), (178, 112574), (187, 107156), (238, 84194), (301, 66572), (308, 65059), (356, 56287), (374, 53578), (473, 42364), (476, 42097), (602, 33286), (623, 32164), (731, 27412), (748, 26789), (946, 21182), (979, 20468), (1204, 16643), (1246, 16082), (1309, 15308), (1462, 13706), (1513, 13244), (1892, 10591), (1958, 10234), (2492, 8041), (2618, 7654), (2924, 6853), (3026, 6622), (3311, 6052), (3827, 5236), (3916, 5117)]