21891675

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{22453}}^1$

素因数の和:22479

約数の個数: 24

約数和(自身を含む): 38980144

約数和(自身を除く): 17088469

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 22453, 67359, 112265, 291889, 336795, 561325, 875667, 1459445, 1683975, 4378335, 7297225, 21891675]

約数ペア:

[(1, 21891675), (3, 7297225), (5, 4378335), (13, 1683975), (15, 1459445), (25, 875667), (39, 561325), (65, 336795), (75, 291889), (195, 112265), (325, 67359), (975, 22453)]