18720074660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{2843}}^1\times {\mathrm{6719}}^1$

素因数の和:9585

約数の個数: 72

約数和(自身を含む): 45753361920

約数和(自身を除く): 27033287260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 2843, 5686, 6719, 11372, 13438, 14215, 19901, 26876, 28430, 33595, 39802, 47033, 56860, 67190, 79604, 94066, 99505, 134380, 139307, 188132, 199010, 235165, 278614, 329231, 398020, 470330, 557228, 658462, 696535, 940660, 1316924, 1393070, 1646155, 2786140, 3292310, 6584620, 19102117, 38204234, 76408468, 95510585, 133714819, 191021170, 267429638, 382042340, 534859276, 668574095, 936003733, 1337148190, 1872007466, 2674296380, 3744014932, 4680018665, 9360037330, 18720074660]

約数ペア:

[(1, 18720074660), (2, 9360037330), (4, 4680018665), (5, 3744014932), (7, 2674296380), (10, 1872007466), (14, 1337148190), (20, 936003733), (28, 668574095), (35, 534859276), (49, 382042340), (70, 267429638), (98, 191021170), (140, 133714819), (196, 95510585), (245, 76408468), (490, 38204234), (980, 19102117), (2843, 6584620), (5686, 3292310), (6719, 2786140), (11372, 1646155), (13438, 1393070), (14215, 1316924), (19901, 940660), (26876, 696535), (28430, 658462), (33595, 557228), (39802, 470330), (47033, 398020), (56860, 329231), (67190, 278614), (79604, 235165), (94066, 199010), (99505, 188132), (134380, 139307)]