21004424

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^2\times {\mathrm{1039}}^1$

素因数の和:1090

約数の個数: 48

約数和(自身を含む): 47548800

約数和(自身を除く): 26544376

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 361, 532, 722, 1039, 1064, 1444, 2078, 2527, 2888, 4156, 5054, 7273, 8312, 10108, 14546, 19741, 20216, 29092, 39482, 58184, 78964, 138187, 157928, 276374, 375079, 552748, 750158, 1105496, 1500316, 2625553, 3000632, 5251106, 10502212, 21004424]

約数ペア:

[(1, 21004424), (2, 10502212), (4, 5251106), (7, 3000632), (8, 2625553), (14, 1500316), (19, 1105496), (28, 750158), (38, 552748), (56, 375079), (76, 276374), (133, 157928), (152, 138187), (266, 78964), (361, 58184), (532, 39482), (722, 29092), (1039, 20216), (1064, 19741), (1444, 14546), (2078, 10108), (2527, 8312), (2888, 7273), (4156, 5054)]