28387431

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{179}}^1\times {\mathrm{263}}^1$

素因数の和:515

約数の個数: 24

約数和(自身を含む): 42007680

約数和(自身を除く): 13620249

約数列:

[1, 3, 9, 67, 179, 201, 263, 537, 603, 789, 1611, 2367, 11993, 17621, 35979, 47077, 52863, 107937, 141231, 158589, 423693, 3154159, 9462477, 28387431]

約数ペア:

[(1, 28387431), (3, 9462477), (9, 3154159), (67, 423693), (179, 158589), (201, 141231), (263, 107937), (537, 52863), (603, 47077), (789, 35979), (1611, 17621), (2367, 11993)]