20823145

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{181}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 30401280

約数和(自身を除く): 9578135

約数列:

[1, 5, 7, 19, 35, 95, 133, 173, 181, 665, 865, 905, 1211, 1267, 3287, 3439, 6055, 6335, 16435, 17195, 23009, 24073, 31313, 115045, 120365, 156565, 219191, 594947, 1095955, 2974735, 4164629, 20823145]

約数ペア:

[(1, 20823145), (5, 4164629), (7, 2974735), (19, 1095955), (35, 594947), (95, 219191), (133, 156565), (173, 120365), (181, 115045), (665, 31313), (865, 24073), (905, 23009), (1211, 17195), (1267, 16435), (3287, 6335), (3439, 6055)]