18211840

素因数分解:

$2^{10}\times 5^1\times {\mathrm{3557}}^1$

素因数の和:3582

約数の個数: 44

約数和(自身を含む): 43699356

約数和(自身を除く): 25487516

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 3557, 5120, 7114, 14228, 17785, 28456, 35570, 56912, 71140, 113824, 142280, 227648, 284560, 455296, 569120, 910592, 1138240, 1821184, 2276480, 3642368, 4552960, 9105920, 18211840]

約数ペア:

[(1, 18211840), (2, 9105920), (4, 4552960), (5, 3642368), (8, 2276480), (10, 1821184), (16, 1138240), (20, 910592), (32, 569120), (40, 455296), (64, 284560), (80, 227648), (128, 142280), (160, 113824), (256, 71140), (320, 56912), (512, 35570), (640, 28456), (1024, 17785), (1280, 14228), (2560, 7114), (3557, 5120)]