21487184

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{401}}^1$

素因数の和:623

約数の個数: 40

約数和(自身を含む): 44414568

約数和(自身を除く): 22927384

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 197, 272, 394, 401, 788, 802, 1576, 1604, 3152, 3208, 3349, 6416, 6698, 6817, 13396, 13634, 26792, 27268, 53584, 54536, 78997, 109072, 157994, 315988, 631976, 1263952, 1342949, 2685898, 5371796, 10743592, 21487184]

約数ペア:

[(1, 21487184), (2, 10743592), (4, 5371796), (8, 2685898), (16, 1342949), (17, 1263952), (34, 631976), (68, 315988), (136, 157994), (197, 109072), (272, 78997), (394, 54536), (401, 53584), (788, 27268), (802, 26792), (1576, 13634), (1604, 13396), (3152, 6817), (3208, 6698), (3349, 6416)]