28528240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27431}}^1$

素因数の和:27457

約数の個数: 40

約数和(自身を含む): 71432928

約数和(自身を除く): 42904688

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 27431, 54862, 109724, 137155, 219448, 274310, 356603, 438896, 548620, 713206, 1097240, 1426412, 1783015, 2194480, 2852824, 3566030, 5705648, 7132060, 14264120, 28528240]

約数ペア:

[(1, 28528240), (2, 14264120), (4, 7132060), (5, 5705648), (8, 3566030), (10, 2852824), (13, 2194480), (16, 1783015), (20, 1426412), (26, 1097240), (40, 713206), (52, 548620), (65, 438896), (80, 356603), (104, 274310), (130, 219448), (208, 137155), (260, 109724), (520, 54862), (1040, 27431)]