278733897

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{401}}^1\times {\mathrm{457}}^1$

素因数の和:890

約数の個数: 36

約数和(自身を含む): 438011964

約数和(自身を除く): 159278067

約数列:

[1, 3, 9, 13, 39, 117, 169, 401, 457, 507, 1203, 1371, 1521, 3609, 4113, 5213, 5941, 15639, 17823, 46917, 53469, 67769, 77233, 183257, 203307, 231699, 549771, 609921, 695097, 1649313, 2382341, 7147023, 21441069, 30970433, 92911299, 278733897]

約数ペア:

[(1, 278733897), (3, 92911299), (9, 30970433), (13, 21441069), (39, 7147023), (117, 2382341), (169, 1649313), (401, 695097), (457, 609921), (507, 549771), (1203, 231699), (1371, 203307), (1521, 183257), (3609, 77233), (4113, 67769), (5213, 53469), (5941, 46917), (15639, 17823)]