21319792706

素因数分解:

$2^1\times {\mathrm{157}}^1\times {\mathrm{197}}^1\times {\mathrm{523}}^1\times {\mathrm{659}}^1$

素因数の和:1538

約数の個数: 32

約数和(自身を含む): 32457775680

約数和(自身を除く): 11137982974

約数列:

[1, 2, 157, 197, 314, 394, 523, 659, 1046, 1318, 30929, 61858, 82111, 103031, 103463, 129823, 164222, 206062, 206926, 259646, 344657, 689314, 16175867, 20382211, 32351734, 40764422, 54111149, 67897429, 108222298, 135794858, 10659896353, 21319792706]

約数ペア:

[(1, 21319792706), (2, 10659896353), (157, 135794858), (197, 108222298), (314, 67897429), (394, 54111149), (523, 40764422), (659, 32351734), (1046, 20382211), (1318, 16175867), (30929, 689314), (61858, 344657), (82111, 259646), (103031, 206926), (103463, 206062), (129823, 164222)]