19053515

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{401}}^1$

素因数の和:479

約数の個数: 32

約数和(自身を含む): 26744256

約数和(自身を除く): 7690741

約数列:

[1, 5, 13, 17, 43, 65, 85, 215, 221, 401, 559, 731, 1105, 2005, 2795, 3655, 5213, 6817, 9503, 17243, 26065, 34085, 47515, 86215, 88621, 224159, 293131, 443105, 1120795, 1465655, 3810703, 19053515]

約数ペア:

[(1, 19053515), (5, 3810703), (13, 1465655), (17, 1120795), (43, 443105), (65, 293131), (85, 224159), (215, 88621), (221, 86215), (401, 47515), (559, 34085), (731, 26065), (1105, 17243), (2005, 9503), (2795, 6817), (3655, 5213)]