19981670

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{1499}}^1$

素因数の和:1580

約数の個数: 32

約数和(自身を含む): 38016000

約数和(自身を除く): 18034330

約数列:

[1, 2, 5, 10, 31, 43, 62, 86, 155, 215, 310, 430, 1333, 1499, 2666, 2998, 6665, 7495, 13330, 14990, 46469, 64457, 92938, 128914, 232345, 322285, 464690, 644570, 1998167, 3996334, 9990835, 19981670]

約数ペア:

[(1, 19981670), (2, 9990835), (5, 3996334), (10, 1998167), (31, 644570), (43, 464690), (62, 322285), (86, 232345), (155, 128914), (215, 92938), (310, 64457), (430, 46469), (1333, 14990), (1499, 13330), (2666, 7495), (2998, 6665)]