1245508720

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{174931}}^1$

素因数の和:175033

約数の個数: 40

約数和(自身を含む): 2928361680

約数和(自身を除く): 1682852960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 174931, 349862, 699724, 874655, 1399448, 1749310, 2798896, 3498620, 6997240, 13994480, 15568859, 31137718, 62275436, 77844295, 124550872, 155688590, 249101744, 311377180, 622754360, 1245508720]

約数ペア:

[(1, 1245508720), (2, 622754360), (4, 311377180), (5, 249101744), (8, 155688590), (10, 124550872), (16, 77844295), (20, 62275436), (40, 31137718), (80, 15568859), (89, 13994480), (178, 6997240), (356, 3498620), (445, 2798896), (712, 1749310), (890, 1399448), (1424, 874655), (1780, 699724), (3560, 349862), (7120, 174931)]