289260020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{7459}}^1$

素因数の和:7752

約数の個数: 48

約数和(自身を含む): 696823680

約数和(自身を除く): 407563660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 277, 554, 1108, 1385, 1939, 2770, 3878, 5540, 7459, 7756, 9695, 14918, 19390, 29836, 37295, 38780, 52213, 74590, 104426, 149180, 208852, 261065, 522130, 1044260, 2066143, 4132286, 8264572, 10330715, 14463001, 20661430, 28926002, 41322860, 57852004, 72315005, 144630010, 289260020]

約数ペア:

[(1, 289260020), (2, 144630010), (4, 72315005), (5, 57852004), (7, 41322860), (10, 28926002), (14, 20661430), (20, 14463001), (28, 10330715), (35, 8264572), (70, 4132286), (140, 2066143), (277, 1044260), (554, 522130), (1108, 261065), (1385, 208852), (1939, 149180), (2770, 104426), (3878, 74590), (5540, 52213), (7459, 38780), (7756, 37295), (9695, 29836), (14918, 19390)]