18161920

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{2027}}^1$

素因数の和:2055

約数の個数: 72

約数和(自身を含む): 49742784

約数和(自身を除く): 31580864

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 560, 640, 896, 1120, 1280, 1792, 2027, 2240, 4054, 4480, 8108, 8960, 10135, 14189, 16216, 20270, 28378, 32432, 40540, 56756, 64864, 70945, 81080, 113512, 129728, 141890, 162160, 227024, 259456, 283780, 324320, 454048, 518912, 567560, 648640, 908096, 1135120, 1297280, 1816192, 2270240, 2594560, 3632384, 4540480, 9080960, 18161920]

約数ペア:

[(1, 18161920), (2, 9080960), (4, 4540480), (5, 3632384), (7, 2594560), (8, 2270240), (10, 1816192), (14, 1297280), (16, 1135120), (20, 908096), (28, 648640), (32, 567560), (35, 518912), (40, 454048), (56, 324320), (64, 283780), (70, 259456), (80, 227024), (112, 162160), (128, 141890), (140, 129728), (160, 113512), (224, 81080), (256, 70945), (280, 64864), (320, 56756), (448, 40540), (560, 32432), (640, 28378), (896, 20270), (1120, 16216), (1280, 14189), (1792, 10135), (2027, 8960), (2240, 8108), (4054, 4480)]