19119620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{487}}^1$

素因数の和:660

約数の個数: 48

約数和(自身を含む): 43615488

約数和(自身を除く): 24495868

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 151, 260, 302, 487, 604, 755, 974, 1510, 1948, 1963, 2435, 3020, 3926, 4870, 6331, 7852, 9740, 9815, 12662, 19630, 25324, 31655, 39260, 63310, 73537, 126620, 147074, 294148, 367685, 735370, 955981, 1470740, 1911962, 3823924, 4779905, 9559810, 19119620]

約数ペア:

[(1, 19119620), (2, 9559810), (4, 4779905), (5, 3823924), (10, 1911962), (13, 1470740), (20, 955981), (26, 735370), (52, 367685), (65, 294148), (130, 147074), (151, 126620), (260, 73537), (302, 63310), (487, 39260), (604, 31655), (755, 25324), (974, 19630), (1510, 12662), (1948, 9815), (1963, 9740), (2435, 7852), (3020, 6331), (3926, 4870)]