21041008

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{331}}^1$

素因数の和:505

約数の個数: 40

約数和(自身を含む): 42608880

約数和(自身を除く): 21567872

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 137, 232, 274, 331, 464, 548, 662, 1096, 1324, 2192, 2648, 3973, 5296, 7946, 9599, 15892, 19198, 31784, 38396, 45347, 63568, 76792, 90694, 153584, 181388, 362776, 725552, 1315063, 2630126, 5260252, 10520504, 21041008]

約数ペア:

[(1, 21041008), (2, 10520504), (4, 5260252), (8, 2630126), (16, 1315063), (29, 725552), (58, 362776), (116, 181388), (137, 153584), (232, 90694), (274, 76792), (331, 63568), (464, 45347), (548, 38396), (662, 31784), (1096, 19198), (1324, 15892), (2192, 9599), (2648, 7946), (3973, 5296)]