19958740

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{991}}^1$

素因数の和:1072

約数の個数: 48

約数和(自身を含む): 44997120

約数和(自身を除く): 25038380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 53, 76, 95, 106, 190, 212, 265, 380, 530, 991, 1007, 1060, 1982, 2014, 3964, 4028, 4955, 5035, 9910, 10070, 18829, 19820, 20140, 37658, 52523, 75316, 94145, 105046, 188290, 210092, 262615, 376580, 525230, 997937, 1050460, 1995874, 3991748, 4989685, 9979370, 19958740]

約数ペア:

[(1, 19958740), (2, 9979370), (4, 4989685), (5, 3991748), (10, 1995874), (19, 1050460), (20, 997937), (38, 525230), (53, 376580), (76, 262615), (95, 210092), (106, 188290), (190, 105046), (212, 94145), (265, 75316), (380, 52523), (530, 37658), (991, 20140), (1007, 19820), (1060, 18829), (1982, 10070), (2014, 9910), (3964, 5035), (4028, 4955)]