19317740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{389}}^1$

素因数の和:602

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 24711700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 191, 260, 382, 389, 764, 778, 955, 1556, 1910, 1945, 2483, 3820, 3890, 4966, 5057, 7780, 9932, 10114, 12415, 20228, 24830, 25285, 49660, 50570, 74299, 101140, 148598, 297196, 371495, 742990, 965887, 1485980, 1931774, 3863548, 4829435, 9658870, 19317740]

約数ペア:

[(1, 19317740), (2, 9658870), (4, 4829435), (5, 3863548), (10, 1931774), (13, 1485980), (20, 965887), (26, 742990), (52, 371495), (65, 297196), (130, 148598), (191, 101140), (260, 74299), (382, 50570), (389, 49660), (764, 25285), (778, 24830), (955, 20228), (1556, 12415), (1910, 10114), (1945, 9932), (2483, 7780), (3820, 5057), (3890, 4966)]