18854992

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{367}}^1$

素因数の和:420

約数の個数: 60

約数和(自身を含む): 41753280

約数和(自身を除く): 22898288

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 169, 208, 247, 304, 338, 367, 494, 676, 734, 988, 1352, 1468, 1976, 2704, 2936, 3211, 3952, 4771, 5872, 6422, 6973, 9542, 12844, 13946, 19084, 25688, 27892, 38168, 51376, 55784, 62023, 76336, 90649, 111568, 124046, 181298, 248092, 362596, 496184, 725192, 992368, 1178437, 1450384, 2356874, 4713748, 9427496, 18854992]

約数ペア:

[(1, 18854992), (2, 9427496), (4, 4713748), (8, 2356874), (13, 1450384), (16, 1178437), (19, 992368), (26, 725192), (38, 496184), (52, 362596), (76, 248092), (104, 181298), (152, 124046), (169, 111568), (208, 90649), (247, 76336), (304, 62023), (338, 55784), (367, 51376), (494, 38168), (676, 27892), (734, 25688), (988, 19084), (1352, 13946), (1468, 12844), (1976, 9542), (2704, 6973), (2936, 6422), (3211, 5872), (3952, 4771)]