16820540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{757}}^1$

素因数の和:878

約数の個数: 48

約数和(自身を含む): 38967264

約数和(自身を除く): 22146724

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 202, 220, 404, 505, 757, 1010, 1111, 1514, 2020, 2222, 3028, 3785, 4444, 5555, 7570, 8327, 11110, 15140, 16654, 22220, 33308, 41635, 76457, 83270, 152914, 166540, 305828, 382285, 764570, 841027, 1529140, 1682054, 3364108, 4205135, 8410270, 16820540]

約数ペア:

[(1, 16820540), (2, 8410270), (4, 4205135), (5, 3364108), (10, 1682054), (11, 1529140), (20, 841027), (22, 764570), (44, 382285), (55, 305828), (101, 166540), (110, 152914), (202, 83270), (220, 76457), (404, 41635), (505, 33308), (757, 22220), (1010, 16654), (1111, 15140), (1514, 11110), (2020, 8327), (2222, 7570), (3028, 5555), (3785, 4444)]