21782835

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{349}}^1$

素因数の和:452

約数の個数: 48

約数和(自身を含む): 40404000

約数和(自身を除く): 18621165

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 73, 95, 171, 219, 285, 349, 365, 657, 855, 1047, 1095, 1387, 1745, 3141, 3285, 4161, 5235, 6631, 6935, 12483, 15705, 19893, 20805, 25477, 33155, 59679, 62415, 76431, 99465, 127385, 229293, 298395, 382155, 484063, 1146465, 1452189, 2420315, 4356567, 7260945, 21782835]

約数ペア:

[(1, 21782835), (3, 7260945), (5, 4356567), (9, 2420315), (15, 1452189), (19, 1146465), (45, 484063), (57, 382155), (73, 298395), (95, 229293), (171, 127385), (219, 99465), (285, 76431), (349, 62415), (365, 59679), (657, 33155), (855, 25477), (1047, 20805), (1095, 19893), (1387, 15705), (1745, 12483), (3141, 6935), (3285, 6631), (4161, 5235)]