18986968

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2371}}^1$

素因数の和:2408

約数の個数: 64

約数和(自身を含む): 47819520

約数和(自身を除く): 28832552

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 22, 26, 28, 44, 52, 56, 77, 88, 91, 104, 143, 154, 182, 286, 308, 364, 572, 616, 728, 1001, 1144, 2002, 2371, 4004, 4742, 8008, 9484, 16597, 18968, 26081, 30823, 33194, 52162, 61646, 66388, 104324, 123292, 132776, 182567, 208648, 215761, 246584, 339053, 365134, 431522, 678106, 730268, 863044, 1356212, 1460536, 1726088, 2373371, 2712424, 4746742, 9493484, 18986968]

約数ペア:

[(1, 18986968), (2, 9493484), (4, 4746742), (7, 2712424), (8, 2373371), (11, 1726088), (13, 1460536), (14, 1356212), (22, 863044), (26, 730268), (28, 678106), (44, 431522), (52, 365134), (56, 339053), (77, 246584), (88, 215761), (91, 208648), (104, 182567), (143, 132776), (154, 123292), (182, 104324), (286, 66388), (308, 61646), (364, 52162), (572, 33194), (616, 30823), (728, 26081), (1001, 18968), (1144, 16597), (2002, 9484), (2371, 8008), (4004, 4742)]