18485740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1451}}^1$

素因数の和:1487

約数の個数: 72

約数和(自身を含む): 48665232

約数和(自身を除く): 30179492

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1451, 1820, 2548, 2902, 3185, 5804, 6370, 7255, 10157, 12740, 14510, 18863, 20314, 29020, 37726, 40628, 50785, 71099, 75452, 94315, 101570, 132041, 142198, 188630, 203140, 264082, 284396, 355495, 377260, 528164, 660205, 710990, 924287, 1320410, 1421980, 1848574, 2640820, 3697148, 4621435, 9242870, 18485740]

約数ペア:

[(1, 18485740), (2, 9242870), (4, 4621435), (5, 3697148), (7, 2640820), (10, 1848574), (13, 1421980), (14, 1320410), (20, 924287), (26, 710990), (28, 660205), (35, 528164), (49, 377260), (52, 355495), (65, 284396), (70, 264082), (91, 203140), (98, 188630), (130, 142198), (140, 132041), (182, 101570), (196, 94315), (245, 75452), (260, 71099), (364, 50785), (455, 40628), (490, 37726), (637, 29020), (910, 20314), (980, 18863), (1274, 14510), (1451, 12740), (1820, 10157), (2548, 7255), (2902, 6370), (3185, 5804)]