28771288

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{39521}}^1$

素因数の和:39547

約数の個数: 32

約数和(自身を含む): 66396960

約数和(自身を除く): 37625672

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 39521, 79042, 158084, 276647, 316168, 513773, 553294, 1027546, 1106588, 2055092, 2213176, 3596411, 4110184, 7192822, 14385644, 28771288]

約数ペア:

[(1, 28771288), (2, 14385644), (4, 7192822), (7, 4110184), (8, 3596411), (13, 2213176), (14, 2055092), (26, 1106588), (28, 1027546), (52, 553294), (56, 513773), (91, 316168), (104, 276647), (182, 158084), (364, 79042), (728, 39521)]