28475775

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{6661}}^1$

素因数の和:6696

約数の個数: 36

約数和(自身を含む): 53695720

約数和(自身を除く): 25219945

約数列:

[1, 3, 5, 9, 15, 19, 25, 45, 57, 75, 95, 171, 225, 285, 475, 855, 1425, 4275, 6661, 19983, 33305, 59949, 99915, 126559, 166525, 299745, 379677, 499575, 632795, 1139031, 1498725, 1898385, 3163975, 5695155, 9491925, 28475775]

約数ペア:

[(1, 28475775), (3, 9491925), (5, 5695155), (9, 3163975), (15, 1898385), (19, 1498725), (25, 1139031), (45, 632795), (57, 499575), (75, 379677), (95, 299745), (171, 166525), (225, 126559), (285, 99915), (475, 59949), (855, 33305), (1425, 19983), (4275, 6661)]