19647765

素因数分解:

$3^5\times 5^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 35887488

約数和(自身を除く): 16239723

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 103, 135, 157, 243, 309, 405, 471, 515, 785, 927, 1215, 1413, 1545, 2355, 2781, 4239, 4635, 7065, 8343, 12717, 13905, 16171, 21195, 25029, 38151, 41715, 48513, 63585, 80855, 125145, 145539, 190755, 242565, 436617, 727695, 1309851, 2183085, 3929553, 6549255, 19647765]

約数ペア:

[(1, 19647765), (3, 6549255), (5, 3929553), (9, 2183085), (15, 1309851), (27, 727695), (45, 436617), (81, 242565), (103, 190755), (135, 145539), (157, 125145), (243, 80855), (309, 63585), (405, 48513), (471, 41715), (515, 38151), (785, 25029), (927, 21195), (1215, 16171), (1413, 13905), (1545, 12717), (2355, 8343), (2781, 7065), (4239, 4635)]