21471645

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{739}}^1$

素因数の和:909

約数の個数: 32

約数和(自身を含む): 37296000

約数和(自身を除く): 15824355

約数列:

[1, 3, 5, 13, 15, 39, 65, 149, 195, 447, 739, 745, 1937, 2217, 2235, 3695, 5811, 9607, 9685, 11085, 28821, 29055, 48035, 110111, 144105, 330333, 550555, 1431443, 1651665, 4294329, 7157215, 21471645]

約数ペア:

[(1, 21471645), (3, 7157215), (5, 4294329), (13, 1651665), (15, 1431443), (39, 550555), (65, 330333), (149, 144105), (195, 110111), (447, 48035), (739, 29055), (745, 28821), (1937, 11085), (2217, 9685), (2235, 9607), (3695, 5811)]