21256144

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^2\times {\mathrm{1123}}^1$

素因数の和:1164

約数の個数: 60

約数和(自身を含む): 51011616

約数和(自身を除く): 29755472

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 169, 182, 208, 338, 364, 676, 728, 1123, 1183, 1352, 1456, 2246, 2366, 2704, 4492, 4732, 7861, 8984, 9464, 14599, 15722, 17968, 18928, 29198, 31444, 58396, 62888, 102193, 116792, 125776, 189787, 204386, 233584, 379574, 408772, 759148, 817544, 1328509, 1518296, 1635088, 2657018, 3036592, 5314036, 10628072, 21256144]

約数ペア:

[(1, 21256144), (2, 10628072), (4, 5314036), (7, 3036592), (8, 2657018), (13, 1635088), (14, 1518296), (16, 1328509), (26, 817544), (28, 759148), (52, 408772), (56, 379574), (91, 233584), (104, 204386), (112, 189787), (169, 125776), (182, 116792), (208, 102193), (338, 62888), (364, 58396), (676, 31444), (728, 29198), (1123, 18928), (1183, 17968), (1352, 15722), (1456, 14599), (2246, 9464), (2366, 8984), (2704, 7861), (4492, 4732)]