1640821280

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{1465019}}^1$

素因数の和:1465041

約数の個数: 48

約数和(自身を含む): 4430220480

約数和(自身を除く): 2789399200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 1465019, 2930038, 5860076, 7325095, 10255133, 11720152, 14650190, 20510266, 23440304, 29300380, 41020532, 46880608, 51275665, 58600760, 82041064, 102551330, 117201520, 164082128, 205102660, 234403040, 328164256, 410205320, 820410640, 1640821280]

約数ペア:

[(1, 1640821280), (2, 820410640), (4, 410205320), (5, 328164256), (7, 234403040), (8, 205102660), (10, 164082128), (14, 117201520), (16, 102551330), (20, 82041064), (28, 58600760), (32, 51275665), (35, 46880608), (40, 41020532), (56, 29300380), (70, 23440304), (80, 20510266), (112, 14650190), (140, 11720152), (160, 10255133), (224, 7325095), (280, 5860076), (560, 2930038), (1120, 1465019)]