20040130

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^2$

素因数の和:219

約数の個数: 48

約数和(自身を含む): 41529024

約数和(自身を除く): 21488894

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 89, 110, 115, 178, 230, 253, 445, 506, 890, 979, 1265, 1958, 2047, 2530, 4094, 4895, 7921, 9790, 10235, 15842, 20470, 22517, 39605, 45034, 79210, 87131, 112585, 174262, 182183, 225170, 364366, 435655, 871310, 910915, 1821830, 2004013, 4008026, 10020065, 20040130]

約数ペア:

[(1, 20040130), (2, 10020065), (5, 4008026), (10, 2004013), (11, 1821830), (22, 910915), (23, 871310), (46, 435655), (55, 364366), (89, 225170), (110, 182183), (115, 174262), (178, 112585), (230, 87131), (253, 79210), (445, 45034), (506, 39605), (890, 22517), (979, 20470), (1265, 15842), (1958, 10235), (2047, 9790), (2530, 7921), (4094, 4895)]