20020988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{521}}^1\times {\mathrm{739}}^1$

素因数の和:1277

約数の個数: 24

約数和(自身を含む): 37855440

約数和(自身を除く): 17834452

約数列:

[1, 2, 4, 13, 26, 52, 521, 739, 1042, 1478, 2084, 2956, 6773, 9607, 13546, 19214, 27092, 38428, 385019, 770038, 1540076, 5005247, 10010494, 20020988]

約数ペア:

[(1, 20020988), (2, 10010494), (4, 5005247), (13, 1540076), (26, 770038), (52, 385019), (521, 38428), (739, 27092), (1042, 19214), (1478, 13546), (2084, 9607), (2956, 6773)]