21180368

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{7079}}^1$

素因数の和:7115

約数の個数: 40

約数和(自身を含む): 47407680

約数和(自身を除く): 26227312

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 34, 44, 68, 88, 136, 176, 187, 272, 374, 748, 1496, 2992, 7079, 14158, 28316, 56632, 77869, 113264, 120343, 155738, 240686, 311476, 481372, 622952, 962744, 1245904, 1323773, 1925488, 2647546, 5295092, 10590184, 21180368]

約数ペア:

[(1, 21180368), (2, 10590184), (4, 5295092), (8, 2647546), (11, 1925488), (16, 1323773), (17, 1245904), (22, 962744), (34, 622952), (44, 481372), (68, 311476), (88, 240686), (136, 155738), (176, 120343), (187, 113264), (272, 77869), (374, 56632), (748, 28316), (1496, 14158), (2992, 7079)]