20019374908

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{601}}^1\times {\mathrm{640579}}^1$

素因数の和:641197

約数の個数: 24

約数和(自身を含む): 37791657680

約数和(自身を除く): 17772282772

約数列:

[1, 2, 4, 13, 26, 52, 601, 1202, 2404, 7813, 15626, 31252, 640579, 1281158, 2562316, 8327527, 16655054, 33310108, 384987979, 769975958, 1539951916, 5004843727, 10009687454, 20019374908]

約数ペア:

[(1, 20019374908), (2, 10009687454), (4, 5004843727), (13, 1539951916), (26, 769975958), (52, 384987979), (601, 33310108), (1202, 16655054), (2404, 8327527), (7813, 2562316), (15626, 1281158), (31252, 640579)]