28778166

素因数分解:

$2^1\times 3^4\times {\mathrm{401}}^1\times {\mathrm{443}}^1$

素因数の和:858

約数の個数: 40

約数和(自身を含む): 64791144

約数和(自身を除く): 36012978

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 401, 443, 802, 886, 1203, 1329, 2406, 2658, 3609, 3987, 7218, 7974, 10827, 11961, 21654, 23922, 32481, 35883, 64962, 71766, 177643, 355286, 532929, 1065858, 1598787, 3197574, 4796361, 9592722, 14389083, 28778166]

約数ペア:

[(1, 28778166), (2, 14389083), (3, 9592722), (6, 4796361), (9, 3197574), (18, 1598787), (27, 1065858), (54, 532929), (81, 355286), (162, 177643), (401, 71766), (443, 64962), (802, 35883), (886, 32481), (1203, 23922), (1329, 21654), (2406, 11961), (2658, 10827), (3609, 7974), (3987, 7218)]