639944656

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1627}}^1$

素因数の和:1740

約数の個数: 80

約数和(自身を含む): 1401799168

約数和(自身を除く): 761854512

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 61, 62, 104, 122, 124, 208, 244, 248, 403, 488, 496, 793, 806, 976, 1586, 1612, 1627, 1891, 3172, 3224, 3254, 3782, 6344, 6448, 6508, 7564, 12688, 13016, 15128, 21151, 24583, 26032, 30256, 42302, 49166, 50437, 84604, 98332, 99247, 100874, 169208, 196664, 198494, 201748, 338416, 393328, 396988, 403496, 655681, 793976, 806992, 1290211, 1311362, 1587952, 2580422, 2622724, 3076657, 5160844, 5245448, 6153314, 10321688, 10490896, 12306628, 20643376, 24613256, 39996541, 49226512, 79993082, 159986164, 319972328, 639944656]

約数ペア:

[(1, 639944656), (2, 319972328), (4, 159986164), (8, 79993082), (13, 49226512), (16, 39996541), (26, 24613256), (31, 20643376), (52, 12306628), (61, 10490896), (62, 10321688), (104, 6153314), (122, 5245448), (124, 5160844), (208, 3076657), (244, 2622724), (248, 2580422), (403, 1587952), (488, 1311362), (496, 1290211), (793, 806992), (806, 793976), (976, 655681), (1586, 403496), (1612, 396988), (1627, 393328), (1891, 338416), (3172, 201748), (3224, 198494), (3254, 196664), (3782, 169208), (6344, 100874), (6448, 99247), (6508, 98332), (7564, 84604), (12688, 50437), (13016, 49166), (15128, 42302), (21151, 30256), (24583, 26032)]