20455904

素因数分解:

$2^5\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:160

約数の個数: 96

約数和(自身を含む): 49351680

約数和(自身を除く): 28895776

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 32, 47, 56, 58, 67, 94, 112, 116, 134, 188, 203, 224, 232, 268, 329, 376, 406, 464, 469, 536, 658, 752, 812, 928, 938, 1072, 1316, 1363, 1504, 1624, 1876, 1943, 2144, 2632, 2726, 3149, 3248, 3752, 3886, 5264, 5452, 6298, 6496, 7504, 7772, 9541, 10528, 10904, 12596, 13601, 15008, 15544, 19082, 21808, 22043, 25192, 27202, 31088, 38164, 43616, 44086, 50384, 54404, 62176, 76328, 88172, 91321, 100768, 108808, 152656, 176344, 182642, 217616, 305312, 352688, 365284, 435232, 639247, 705376, 730568, 1278494, 1461136, 2556988, 2922272, 5113976, 10227952, 20455904]

約数ペア:

[(1, 20455904), (2, 10227952), (4, 5113976), (7, 2922272), (8, 2556988), (14, 1461136), (16, 1278494), (28, 730568), (29, 705376), (32, 639247), (47, 435232), (56, 365284), (58, 352688), (67, 305312), (94, 217616), (112, 182642), (116, 176344), (134, 152656), (188, 108808), (203, 100768), (224, 91321), (232, 88172), (268, 76328), (329, 62176), (376, 54404), (406, 50384), (464, 44086), (469, 43616), (536, 38164), (658, 31088), (752, 27202), (812, 25192), (928, 22043), (938, 21808), (1072, 19082), (1316, 15544), (1363, 15008), (1504, 13601), (1624, 12596), (1876, 10904), (1943, 10528), (2144, 9541), (2632, 7772), (2726, 7504), (3149, 6496), (3248, 6298), (3752, 5452), (3886, 5264)]