28857640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{4481}}^1$

素因数の和:4522

約数の個数: 64

約数和(自身を含む): 77448960

約数和(自身を除く): 48591320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 4481, 6440, 8962, 17924, 22405, 31367, 35848, 44810, 62734, 89620, 103063, 125468, 156835, 179240, 206126, 250936, 313670, 412252, 515315, 627340, 721441, 824504, 1030630, 1254680, 1442882, 2061260, 2885764, 3607205, 4122520, 5771528, 7214410, 14428820, 28857640]

約数ペア:

[(1, 28857640), (2, 14428820), (4, 7214410), (5, 5771528), (7, 4122520), (8, 3607205), (10, 2885764), (14, 2061260), (20, 1442882), (23, 1254680), (28, 1030630), (35, 824504), (40, 721441), (46, 627340), (56, 515315), (70, 412252), (92, 313670), (115, 250936), (140, 206126), (161, 179240), (184, 156835), (230, 125468), (280, 103063), (322, 89620), (460, 62734), (644, 44810), (805, 35848), (920, 31367), (1288, 22405), (1610, 17924), (3220, 8962), (4481, 6440)]