18649640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{463}}^1$

素因数の和:546

約数の個数: 64

約数和(自身を含む): 45100800

約数和(自身を除く): 26451160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 53, 76, 95, 106, 152, 190, 212, 265, 380, 424, 463, 530, 760, 926, 1007, 1060, 1852, 2014, 2120, 2315, 3704, 4028, 4630, 5035, 8056, 8797, 9260, 10070, 17594, 18520, 20140, 24539, 35188, 40280, 43985, 49078, 70376, 87970, 98156, 122695, 175940, 196312, 245390, 351880, 466241, 490780, 932482, 981560, 1864964, 2331205, 3729928, 4662410, 9324820, 18649640]

約数ペア:

[(1, 18649640), (2, 9324820), (4, 4662410), (5, 3729928), (8, 2331205), (10, 1864964), (19, 981560), (20, 932482), (38, 490780), (40, 466241), (53, 351880), (76, 245390), (95, 196312), (106, 175940), (152, 122695), (190, 98156), (212, 87970), (265, 70376), (380, 49078), (424, 43985), (463, 40280), (530, 35188), (760, 24539), (926, 20140), (1007, 18520), (1060, 17594), (1852, 10070), (2014, 9260), (2120, 8797), (2315, 8056), (3704, 5035), (4028, 4630)]