19998582975

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{295291}}^1$

素因数の和:295357

約数の個数: 72

約数和(自身を含む): 41888941952

約数和(自身を除く): 21890358977

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 43, 45, 63, 75, 105, 129, 175, 215, 225, 301, 315, 387, 525, 645, 903, 1075, 1505, 1575, 1935, 2709, 3225, 4515, 7525, 9675, 13545, 22575, 67725, 295291, 885873, 1476455, 2067037, 2657619, 4429365, 6201111, 7382275, 10335185, 12697513, 13288095, 18603333, 22146825, 31005555, 38092539, 51675925, 63487565, 66440475, 88882591, 93016665, 114277617, 155027775, 190462695, 266647773, 317437825, 444412955, 465083325, 571388085, 799943319, 952313475, 1333238865, 2222064775, 2856940425, 3999716595, 6666194325, 19998582975]

約数ペア:

[(1, 19998582975), (3, 6666194325), (5, 3999716595), (7, 2856940425), (9, 2222064775), (15, 1333238865), (21, 952313475), (25, 799943319), (35, 571388085), (43, 465083325), (45, 444412955), (63, 317437825), (75, 266647773), (105, 190462695), (129, 155027775), (175, 114277617), (215, 93016665), (225, 88882591), (301, 66440475), (315, 63487565), (387, 51675925), (525, 38092539), (645, 31005555), (903, 22146825), (1075, 18603333), (1505, 13288095), (1575, 12697513), (1935, 10335185), (2709, 7382275), (3225, 6201111), (4515, 4429365), (7525, 2657619), (9675, 2067037), (13545, 1476455), (22575, 885873), (67725, 295291)]