20785120

素因数分解:

$2^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{3511}}^1$

素因数の和:3563

約数の個数: 48

約数和(自身を含む): 50446368

約数和(自身を除く): 29661248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 74, 80, 148, 160, 185, 296, 370, 592, 740, 1184, 1480, 2960, 3511, 5920, 7022, 14044, 17555, 28088, 35110, 56176, 70220, 112352, 129907, 140440, 259814, 280880, 519628, 561760, 649535, 1039256, 1299070, 2078512, 2598140, 4157024, 5196280, 10392560, 20785120]

約数ペア:

[(1, 20785120), (2, 10392560), (4, 5196280), (5, 4157024), (8, 2598140), (10, 2078512), (16, 1299070), (20, 1039256), (32, 649535), (37, 561760), (40, 519628), (74, 280880), (80, 259814), (148, 140440), (160, 129907), (185, 112352), (296, 70220), (370, 56176), (592, 35110), (740, 28088), (1184, 17555), (1480, 14044), (2960, 7022), (3511, 5920)]