21919300

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^2\times {\mathrm{1297}}^1$

素因数の和:1337

約数の個数: 54

約数和(自身を含む): 51544878

約数和(自身を除く): 29625578

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 169, 260, 325, 338, 650, 676, 845, 1297, 1300, 1690, 2594, 3380, 4225, 5188, 6485, 8450, 12970, 16861, 16900, 25940, 32425, 33722, 64850, 67444, 84305, 129700, 168610, 219193, 337220, 421525, 438386, 843050, 876772, 1095965, 1686100, 2191930, 4383860, 5479825, 10959650, 21919300]

約数ペア:

[(1, 21919300), (2, 10959650), (4, 5479825), (5, 4383860), (10, 2191930), (13, 1686100), (20, 1095965), (25, 876772), (26, 843050), (50, 438386), (52, 421525), (65, 337220), (100, 219193), (130, 168610), (169, 129700), (260, 84305), (325, 67444), (338, 64850), (650, 33722), (676, 32425), (845, 25940), (1297, 16900), (1300, 16861), (1690, 12970), (2594, 8450), (3380, 6485), (4225, 5188)]