18008900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1979}}^1$

素因数の和:2013

約数の個数: 72

約数和(自身を含む): 48121920

約数和(自身を除く): 30113020

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 91, 100, 130, 140, 175, 182, 260, 325, 350, 364, 455, 650, 700, 910, 1300, 1820, 1979, 2275, 3958, 4550, 7916, 9100, 9895, 13853, 19790, 25727, 27706, 39580, 49475, 51454, 55412, 69265, 98950, 102908, 128635, 138530, 180089, 197900, 257270, 277060, 346325, 360178, 514540, 643175, 692650, 720356, 900445, 1286350, 1385300, 1800890, 2572700, 3601780, 4502225, 9004450, 18008900]

約数ペア:

[(1, 18008900), (2, 9004450), (4, 4502225), (5, 3601780), (7, 2572700), (10, 1800890), (13, 1385300), (14, 1286350), (20, 900445), (25, 720356), (26, 692650), (28, 643175), (35, 514540), (50, 360178), (52, 346325), (65, 277060), (70, 257270), (91, 197900), (100, 180089), (130, 138530), (140, 128635), (175, 102908), (182, 98950), (260, 69265), (325, 55412), (350, 51454), (364, 49475), (455, 39580), (650, 27706), (700, 25727), (910, 19790), (1300, 13853), (1820, 9895), (1979, 9100), (2275, 7916), (3958, 4550)]