81356005

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1$

素因数の和:325

約数の個数: 32

約数和(自身を含む): 106243200

約数和(自身を除く): 24887195

約数列:

[1, 5, 19, 61, 95, 101, 139, 305, 505, 695, 1159, 1919, 2641, 5795, 6161, 8479, 9595, 13205, 14039, 30805, 42395, 70195, 117059, 161101, 266741, 585295, 805505, 856379, 1333705, 4281895, 16271201, 81356005]

約数ペア:

[(1, 81356005), (5, 16271201), (19, 4281895), (61, 1333705), (95, 856379), (101, 805505), (139, 585295), (305, 266741), (505, 161101), (695, 117059), (1159, 70195), (1919, 42395), (2641, 30805), (5795, 14039), (6161, 13205), (8479, 9595)]