21217131

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{4423}}^1$

素因数の和:4483

約数の個数: 24

約数和(自身を含む): 33817056

約数和(自身を除く): 12599925

約数列:

[1, 3, 9, 13, 39, 41, 117, 123, 369, 533, 1599, 4423, 4797, 13269, 39807, 57499, 172497, 181343, 517491, 544029, 1632087, 2357459, 7072377, 21217131]

約数ペア:

[(1, 21217131), (3, 7072377), (9, 2357459), (13, 1632087), (39, 544029), (41, 517491), (117, 181343), (123, 172497), (369, 57499), (533, 39807), (1599, 13269), (4423, 4797)]