21084609

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^3\times {\mathrm{457}}^1$

素因数の和:506

約数の個数: 32

約数和(自身を含む): 34881280

約数和(自身を除く): 13796671

約数列:

[1, 3, 7, 13, 21, 39, 91, 169, 273, 457, 507, 1183, 1371, 2197, 3199, 3549, 5941, 6591, 9597, 15379, 17823, 41587, 46137, 77233, 124761, 231699, 540631, 1004029, 1621893, 3012087, 7028203, 21084609]

約数ペア:

[(1, 21084609), (3, 7028203), (7, 3012087), (13, 1621893), (21, 1004029), (39, 540631), (91, 231699), (169, 124761), (273, 77233), (457, 46137), (507, 41587), (1183, 17823), (1371, 15379), (2197, 9597), (3199, 6591), (3549, 5941)]