21036897

素因数分解:

$3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{2549}}^1$

素因数の和:2693

約数の個数: 24

約数和(自身を含む): 35006400

約数和(自身を除く): 13969503

約数列:

[1, 3, 7, 9, 21, 63, 131, 393, 917, 1179, 2549, 2751, 7647, 8253, 17843, 22941, 53529, 160587, 333919, 1001757, 2337433, 3005271, 7012299, 21036897]

約数ペア:

[(1, 21036897), (3, 7012299), (7, 3005271), (9, 2337433), (21, 1001757), (63, 333919), (131, 160587), (393, 53529), (917, 22941), (1179, 17843), (2549, 8253), (2751, 7647)]