28403816

素因数分解:

$2^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:282

約数の個数: 64

約数和(自身を含む): 63504000

約数和(自身を除く): 35100184

約数列:

[1, 2, 4, 7, 8, 14, 28, 41, 56, 82, 89, 139, 164, 178, 278, 287, 328, 356, 556, 574, 623, 712, 973, 1112, 1148, 1246, 1946, 2296, 2492, 3649, 3892, 4984, 5699, 7298, 7784, 11398, 12371, 14596, 22796, 24742, 25543, 29192, 39893, 45592, 49484, 51086, 79786, 86597, 98968, 102172, 159572, 173194, 204344, 319144, 346388, 507211, 692776, 1014422, 2028844, 3550477, 4057688, 7100954, 14201908, 28403816]

約数ペア:

[(1, 28403816), (2, 14201908), (4, 7100954), (7, 4057688), (8, 3550477), (14, 2028844), (28, 1014422), (41, 692776), (56, 507211), (82, 346388), (89, 319144), (139, 204344), (164, 173194), (178, 159572), (278, 102172), (287, 98968), (328, 86597), (356, 79786), (556, 51086), (574, 49484), (623, 45592), (712, 39893), (973, 29192), (1112, 25543), (1148, 24742), (1246, 22796), (1946, 14596), (2296, 12371), (2492, 11398), (3649, 7784), (3892, 7298), (4984, 5699)]