20523520

素因数分解:

$2^9\times 5^1\times {\mathrm{8017}}^1$

素因数の和:8040

約数の個数: 40

約数和(自身を含む): 49214484

約数和(自身を除く): 28690964

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 8017, 16034, 32068, 40085, 64136, 80170, 128272, 160340, 256544, 320680, 513088, 641360, 1026176, 1282720, 2052352, 2565440, 4104704, 5130880, 10261760, 20523520]

約数ペア:

[(1, 20523520), (2, 10261760), (4, 5130880), (5, 4104704), (8, 2565440), (10, 2052352), (16, 1282720), (20, 1026176), (32, 641360), (40, 513088), (64, 320680), (80, 256544), (128, 160340), (160, 128272), (256, 80170), (320, 64136), (512, 40085), (640, 32068), (1280, 16034), (2560, 8017)]