18857020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{797}}^1$

素因数の和:839

約数の個数: 72

約数和(自身を含む): 49067424

約数和(自身を除く): 30210404

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 169, 182, 260, 338, 364, 455, 676, 797, 845, 910, 1183, 1594, 1690, 1820, 2366, 3188, 3380, 3985, 4732, 5579, 5915, 7970, 10361, 11158, 11830, 15940, 20722, 22316, 23660, 27895, 41444, 51805, 55790, 72527, 103610, 111580, 134693, 145054, 207220, 269386, 290108, 362635, 538772, 673465, 725270, 942851, 1346930, 1450540, 1885702, 2693860, 3771404, 4714255, 9428510, 18857020]

約数ペア:

[(1, 18857020), (2, 9428510), (4, 4714255), (5, 3771404), (7, 2693860), (10, 1885702), (13, 1450540), (14, 1346930), (20, 942851), (26, 725270), (28, 673465), (35, 538772), (52, 362635), (65, 290108), (70, 269386), (91, 207220), (130, 145054), (140, 134693), (169, 111580), (182, 103610), (260, 72527), (338, 55790), (364, 51805), (455, 41444), (676, 27895), (797, 23660), (845, 22316), (910, 20722), (1183, 15940), (1594, 11830), (1690, 11158), (1820, 10361), (2366, 7970), (3188, 5915), (3380, 5579), (3985, 4732)]