20915360

素因数分解:

$2^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{3533}}^1$

素因数の和:3585

約数の個数: 48

約数和(自身を含む): 50762376

約数和(自身を除く): 29847016

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, 3533, 5920, 7066, 14132, 17665, 28264, 35330, 56528, 70660, 113056, 130721, 141320, 261442, 282640, 522884, 565280, 653605, 1045768, 1307210, 2091536, 2614420, 4183072, 5228840, 10457680, 20915360]

約数ペア:

[(1, 20915360), (2, 10457680), (4, 5228840), (5, 4183072), (8, 2614420), (10, 2091536), (16, 1307210), (20, 1045768), (32, 653605), (37, 565280), (40, 522884), (74, 282640), (80, 261442), (148, 141320), (160, 130721), (185, 113056), (296, 70660), (370, 56528), (592, 35330), (740, 28264), (1184, 17665), (1480, 14132), (2960, 7066), (3533, 5920)]