19349140

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{151}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 42134400

約数和(自身を除く): 22785260

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 149, 151, 172, 215, 298, 302, 430, 596, 604, 745, 755, 860, 1490, 1510, 2980, 3020, 6407, 6493, 12814, 12986, 22499, 25628, 25972, 32035, 32465, 44998, 64070, 64930, 89996, 112495, 128140, 129860, 224990, 449980, 967457, 1934914, 3869828, 4837285, 9674570, 19349140]

約数ペア:

[(1, 19349140), (2, 9674570), (4, 4837285), (5, 3869828), (10, 1934914), (20, 967457), (43, 449980), (86, 224990), (149, 129860), (151, 128140), (172, 112495), (215, 89996), (298, 64930), (302, 64070), (430, 44998), (596, 32465), (604, 32035), (745, 25972), (755, 25628), (860, 22499), (1490, 12986), (1510, 12814), (2980, 6493), (3020, 6407)]