720339980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1307}}^1\times {\mathrm{1621}}^1$

素因数の和:2954

約数の個数: 48

約数和(自身を含む): 1603911456

約数和(自身を除く): 883571476

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 1307, 1621, 2614, 3242, 5228, 6484, 6535, 8105, 13070, 16210, 22219, 26140, 27557, 32420, 44438, 55114, 88876, 110228, 111095, 137785, 222190, 275570, 444380, 551140, 2118647, 4237294, 8474588, 10593235, 21186470, 36016999, 42372940, 72033998, 144067996, 180084995, 360169990, 720339980]

約数ペア:

[(1, 720339980), (2, 360169990), (4, 180084995), (5, 144067996), (10, 72033998), (17, 42372940), (20, 36016999), (34, 21186470), (68, 10593235), (85, 8474588), (170, 4237294), (340, 2118647), (1307, 551140), (1621, 444380), (2614, 275570), (3242, 222190), (5228, 137785), (6484, 111095), (6535, 110228), (8105, 88876), (13070, 55114), (16210, 44438), (22219, 32420), (26140, 27557)]