18070780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{9929}}^1$

素因数の和:9958

約数の個数: 48

約数和(自身を含む): 46710720

約数和(自身を除く): 28639940

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 9929, 19858, 39716, 49645, 69503, 99290, 129077, 139006, 198580, 258154, 278012, 347515, 516308, 645385, 695030, 903539, 1290770, 1390060, 1807078, 2581540, 3614156, 4517695, 9035390, 18070780]

約数ペア:

[(1, 18070780), (2, 9035390), (4, 4517695), (5, 3614156), (7, 2581540), (10, 1807078), (13, 1390060), (14, 1290770), (20, 903539), (26, 695030), (28, 645385), (35, 516308), (52, 347515), (65, 278012), (70, 258154), (91, 198580), (130, 139006), (140, 129077), (182, 99290), (260, 69503), (364, 49645), (455, 39716), (910, 19858), (1820, 9929)]