19986730

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1321}}^1$

素因数の和:1434

約数の個数: 32

約数和(自身を含む): 38549520

約数和(自身を除く): 18562790

約数列:

[1, 2, 5, 10, 17, 34, 85, 89, 170, 178, 445, 890, 1321, 1513, 2642, 3026, 6605, 7565, 13210, 15130, 22457, 44914, 112285, 117569, 224570, 235138, 587845, 1175690, 1998673, 3997346, 9993365, 19986730]

約数ペア:

[(1, 19986730), (2, 9993365), (5, 3997346), (10, 1998673), (17, 1175690), (34, 587845), (85, 235138), (89, 224570), (170, 117569), (178, 112285), (445, 44914), (890, 22457), (1321, 15130), (1513, 13210), (2642, 7565), (3026, 6605)]