20382880

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18199}}^1$

素因数の和:18221

約数の個数: 48

約数和(自身を含む): 55036800

約数和(自身を除く): 34653920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18199, 36398, 72796, 90995, 127393, 145592, 181990, 254786, 291184, 363980, 509572, 582368, 636965, 727960, 1019144, 1273930, 1455920, 2038288, 2547860, 2911840, 4076576, 5095720, 10191440, 20382880]

約数ペア:

[(1, 20382880), (2, 10191440), (4, 5095720), (5, 4076576), (7, 2911840), (8, 2547860), (10, 2038288), (14, 1455920), (16, 1273930), (20, 1019144), (28, 727960), (32, 636965), (35, 582368), (40, 509572), (56, 363980), (70, 291184), (80, 254786), (112, 181990), (140, 145592), (160, 127393), (224, 90995), (280, 72796), (560, 36398), (1120, 18199)]