18925270

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2971}}^1$

素因数の和:3005

約数の個数: 48

約数和(自身を含む): 42689808

約数和(自身を除く): 23764538

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 130, 182, 245, 455, 490, 637, 910, 1274, 2971, 3185, 5942, 6370, 14855, 20797, 29710, 38623, 41594, 77246, 103985, 145579, 193115, 207970, 270361, 291158, 386230, 540722, 727895, 1351805, 1455790, 1892527, 2703610, 3785054, 9462635, 18925270]

約数ペア:

[(1, 18925270), (2, 9462635), (5, 3785054), (7, 2703610), (10, 1892527), (13, 1455790), (14, 1351805), (26, 727895), (35, 540722), (49, 386230), (65, 291158), (70, 270361), (91, 207970), (98, 193115), (130, 145579), (182, 103985), (245, 77246), (455, 41594), (490, 38623), (637, 29710), (910, 20797), (1274, 14855), (2971, 6370), (3185, 5942)]