20519660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1423}}^1$

素因数の和:1542

約数の個数: 48

約数和(自身を含む): 49760256

約数和(自身を除く): 29240596

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 103, 140, 206, 412, 515, 721, 1030, 1423, 1442, 2060, 2846, 2884, 3605, 5692, 7115, 7210, 9961, 14230, 14420, 19922, 28460, 39844, 49805, 99610, 146569, 199220, 293138, 586276, 732845, 1025983, 1465690, 2051966, 2931380, 4103932, 5129915, 10259830, 20519660]

約数ペア:

[(1, 20519660), (2, 10259830), (4, 5129915), (5, 4103932), (7, 2931380), (10, 2051966), (14, 1465690), (20, 1025983), (28, 732845), (35, 586276), (70, 293138), (103, 199220), (140, 146569), (206, 99610), (412, 49805), (515, 39844), (721, 28460), (1030, 19922), (1423, 14420), (1442, 14230), (2060, 9961), (2846, 7210), (2884, 7115), (3605, 5692)]