28293915

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{373}}^1\times {\mathrm{389}}^1$

素因数の和:783

約数の個数: 32

約数和(自身を含む): 49008960

約数和(自身を除く): 20715045

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 373, 389, 1119, 1167, 1865, 1945, 4849, 5057, 5595, 5835, 14547, 15171, 24245, 25285, 72735, 75855, 145097, 435291, 725485, 1886261, 2176455, 5658783, 9431305, 28293915]

約数ペア:

[(1, 28293915), (3, 9431305), (5, 5658783), (13, 2176455), (15, 1886261), (39, 725485), (65, 435291), (195, 145097), (373, 75855), (389, 72735), (1119, 25285), (1167, 24245), (1865, 15171), (1945, 14547), (4849, 5835), (5057, 5595)]