201121921

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{28703}}^1$

素因数の和:28741

約数の個数: 24

約数和(自身を含む): 274869504

約数和(自身を除く): 73747583

約数列:

[1, 7, 11, 13, 49, 77, 91, 143, 539, 637, 1001, 7007, 28703, 200921, 315733, 373139, 1406447, 2210131, 2611973, 4104529, 15470917, 18283811, 28731703, 201121921]

約数ペア:

[(1, 201121921), (7, 28731703), (11, 18283811), (13, 15470917), (49, 4104529), (77, 2611973), (91, 2210131), (143, 1406447), (539, 373139), (637, 315733), (1001, 200921), (7007, 28703)]