21463975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{313}}^1$

素因数の和:547

約数の個数: 24

約数和(自身を含む): 28890512

約数和(自身を除く): 7426537

約数列:

[1, 5, 13, 25, 65, 211, 313, 325, 1055, 1565, 2743, 4069, 5275, 7825, 13715, 20345, 66043, 68575, 101725, 330215, 858559, 1651075, 4292795, 21463975]

約数ペア:

[(1, 21463975), (5, 4292795), (13, 1651075), (25, 858559), (65, 330215), (211, 101725), (313, 68575), (325, 66043), (1055, 20345), (1565, 13715), (2743, 7825), (4069, 5275)]