21397064

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{283}}^1\times {\mathrm{727}}^1$

素因数の和:1029

約数の個数: 32

約数和(自身を含む): 43417920

約数和(自身を除く): 22020856

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 283, 566, 727, 1132, 1454, 2264, 2908, 3679, 5816, 7358, 9451, 14716, 18902, 29432, 37804, 75608, 205741, 411482, 822964, 1645928, 2674633, 5349266, 10698532, 21397064]

約数ペア:

[(1, 21397064), (2, 10698532), (4, 5349266), (8, 2674633), (13, 1645928), (26, 822964), (52, 411482), (104, 205741), (283, 75608), (566, 37804), (727, 29432), (1132, 18902), (1454, 14716), (2264, 9451), (2908, 7358), (3679, 5816)]