20841280

素因数分解:

$2^6\times 5^1\times {\mathrm{65129}}^1$

素因数の和:65146

約数の個数: 28

約数和(自身を含む): 49629060

約数和(自身を除く): 28787780

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 65129, 130258, 260516, 325645, 521032, 651290, 1042064, 1302580, 2084128, 2605160, 4168256, 5210320, 10420640, 20841280]

約数ペア:

[(1, 20841280), (2, 10420640), (4, 5210320), (5, 4168256), (8, 2605160), (10, 2084128), (16, 1302580), (20, 1042064), (32, 651290), (40, 521032), (64, 325645), (80, 260516), (160, 130258), (320, 65129)]