21640516

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{3313}}^1$

素因数の和:3411

約数の個数: 24

約数和(自身を含む): 40086144

約数和(自身を除く): 18445628

約数列:

[1, 2, 4, 23, 46, 71, 92, 142, 284, 1633, 3266, 3313, 6532, 6626, 13252, 76199, 152398, 235223, 304796, 470446, 940892, 5410129, 10820258, 21640516]

約数ペア:

[(1, 21640516), (2, 10820258), (4, 5410129), (23, 940892), (46, 470446), (71, 304796), (92, 235223), (142, 152398), (284, 76199), (1633, 13252), (3266, 6626), (3313, 6532)]