19480016

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{461}}^1$

素因数の和:627

約数の個数: 40

約数和(自身を含む): 40101600

約数和(自身を除く): 20621584

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 139, 152, 278, 304, 461, 556, 922, 1112, 1844, 2224, 2641, 3688, 5282, 7376, 8759, 10564, 17518, 21128, 35036, 42256, 64079, 70072, 128158, 140144, 256316, 512632, 1025264, 1217501, 2435002, 4870004, 9740008, 19480016]

約数ペア:

[(1, 19480016), (2, 9740008), (4, 4870004), (8, 2435002), (16, 1217501), (19, 1025264), (38, 512632), (76, 256316), (139, 140144), (152, 128158), (278, 70072), (304, 64079), (461, 42256), (556, 35036), (922, 21128), (1112, 17518), (1844, 10564), (2224, 8759), (2641, 7376), (3688, 5282)]