20520084

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{661}}^1$

素因数の和:880

約数の個数: 48

約数和(自身を含む): 51900800

約数和(自身を除く): 31380716

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 199, 398, 597, 661, 796, 1194, 1322, 1983, 2388, 2587, 2644, 3966, 5174, 7761, 7932, 8593, 10348, 15522, 17186, 25779, 31044, 34372, 51558, 103116, 131539, 263078, 394617, 526156, 789234, 1578468, 1710007, 3420014, 5130021, 6840028, 10260042, 20520084]

約数ペア:

[(1, 20520084), (2, 10260042), (3, 6840028), (4, 5130021), (6, 3420014), (12, 1710007), (13, 1578468), (26, 789234), (39, 526156), (52, 394617), (78, 263078), (156, 131539), (199, 103116), (398, 51558), (597, 34372), (661, 31044), (796, 25779), (1194, 17186), (1322, 15522), (1983, 10348), (2388, 8593), (2587, 7932), (2644, 7761), (3966, 5174)]