19389990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{15031}}^1$

素因数の和:15084

約数の個数: 32

約数和(自身を含む): 47621376

約数和(自身を除く): 28231386

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 1290, 15031, 30062, 45093, 75155, 90186, 150310, 225465, 450930, 646333, 1292666, 1938999, 3231665, 3877998, 6463330, 9694995, 19389990]

約数ペア:

[(1, 19389990), (2, 9694995), (3, 6463330), (5, 3877998), (6, 3231665), (10, 1938999), (15, 1292666), (30, 646333), (43, 450930), (86, 225465), (129, 150310), (215, 90186), (258, 75155), (430, 45093), (645, 30062), (1290, 15031)]