2638220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:234

約数の個数: 48

約数和(自身を含む): 6091680

約数和(自身を除く): 3453460

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 73, 130, 139, 146, 260, 278, 292, 365, 556, 695, 730, 949, 1390, 1460, 1807, 1898, 2780, 3614, 3796, 4745, 7228, 9035, 9490, 10147, 18070, 18980, 20294, 36140, 40588, 50735, 101470, 131911, 202940, 263822, 527644, 659555, 1319110, 2638220]

約数ペア:

[(1, 2638220), (2, 1319110), (4, 659555), (5, 527644), (10, 263822), (13, 202940), (20, 131911), (26, 101470), (52, 50735), (65, 40588), (73, 36140), (130, 20294), (139, 18980), (146, 18070), (260, 10147), (278, 9490), (292, 9035), (365, 7228), (556, 4745), (695, 3796), (730, 3614), (949, 2780), (1390, 1898), (1460, 1807)]