81911180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{1013}}^1$

素因数の和:1346

約数の個数: 48

約数和(自身を含む): 186024384

約数和(自身を除く): 104113204

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 311, 622, 1013, 1244, 1555, 2026, 3110, 4043, 4052, 5065, 6220, 8086, 10130, 13169, 16172, 20215, 20260, 26338, 40430, 52676, 65845, 80860, 131690, 263380, 315043, 630086, 1260172, 1575215, 3150430, 4095559, 6300860, 8191118, 16382236, 20477795, 40955590, 81911180]

約数ペア:

[(1, 81911180), (2, 40955590), (4, 20477795), (5, 16382236), (10, 8191118), (13, 6300860), (20, 4095559), (26, 3150430), (52, 1575215), (65, 1260172), (130, 630086), (260, 315043), (311, 263380), (622, 131690), (1013, 80860), (1244, 65845), (1555, 52676), (2026, 40430), (3110, 26338), (4043, 20260), (4052, 20215), (5065, 16172), (6220, 13169), (8086, 10130)]