20285775

素因数分解:

$3^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{733}}^1$

素因数の和:793

約数の個数: 48

約数和(自身を含む): 38226720

約数和(自身を除く): 17940945

約数列:

[1, 3, 5, 9, 15, 25, 27, 41, 45, 75, 123, 135, 205, 225, 369, 615, 675, 733, 1025, 1107, 1845, 2199, 3075, 3665, 5535, 6597, 9225, 10995, 18325, 19791, 27675, 30053, 32985, 54975, 90159, 98955, 150265, 164925, 270477, 450795, 494775, 751325, 811431, 1352385, 2253975, 4057155, 6761925, 20285775]

約数ペア:

[(1, 20285775), (3, 6761925), (5, 4057155), (9, 2253975), (15, 1352385), (25, 811431), (27, 751325), (41, 494775), (45, 450795), (75, 270477), (123, 164925), (135, 150265), (205, 98955), (225, 90159), (369, 54975), (615, 32985), (675, 30053), (733, 27675), (1025, 19791), (1107, 18325), (1845, 10995), (2199, 9225), (3075, 6597), (3665, 5535)]