81407300

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^2\times {\mathrm{4817}}^1$

素因数の和:4857

約数の個数: 54

約数和(自身を含む): 191327598

約数和(自身を除く): 109920298

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 169, 260, 325, 338, 650, 676, 845, 1300, 1690, 3380, 4225, 4817, 8450, 9634, 16900, 19268, 24085, 48170, 62621, 96340, 120425, 125242, 240850, 250484, 313105, 481700, 626210, 814073, 1252420, 1565525, 1628146, 3131050, 3256292, 4070365, 6262100, 8140730, 16281460, 20351825, 40703650, 81407300]

約数ペア:

[(1, 81407300), (2, 40703650), (4, 20351825), (5, 16281460), (10, 8140730), (13, 6262100), (20, 4070365), (25, 3256292), (26, 3131050), (50, 1628146), (52, 1565525), (65, 1252420), (100, 814073), (130, 626210), (169, 481700), (260, 313105), (325, 250484), (338, 240850), (650, 125242), (676, 120425), (845, 96340), (1300, 62621), (1690, 48170), (3380, 24085), (4225, 19268), (4817, 16900), (8450, 9634)]