641445505

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{233}}^1\times {\mathrm{647}}^1$

素因数の和:945

約数の個数: 32

約数和(自身を含む): 829730304

約数和(自身を除く): 188284799

約数列:

[1, 5, 23, 37, 115, 185, 233, 647, 851, 1165, 3235, 4255, 5359, 8621, 14881, 23939, 26795, 43105, 74405, 119695, 150751, 198283, 550597, 753755, 991415, 2752985, 3467273, 5577787, 17336365, 27888935, 128289101, 641445505]

約数ペア:

[(1, 641445505), (5, 128289101), (23, 27888935), (37, 17336365), (115, 5577787), (185, 3467273), (233, 2752985), (647, 991415), (851, 753755), (1165, 550597), (3235, 198283), (4255, 150751), (5359, 119695), (8621, 74405), (14881, 43105), (23939, 26795)]