18031420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{7451}}^1$

素因数の和:7482

約数の個数: 36

約数和(自身を含む): 41626872

約数和(自身を除く): 23595452

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 7451, 14902, 29804, 37255, 74510, 81961, 149020, 163922, 327844, 409805, 819610, 901571, 1639220, 1803142, 3606284, 4507855, 9015710, 18031420]

約数ペア:

[(1, 18031420), (2, 9015710), (4, 4507855), (5, 3606284), (10, 1803142), (11, 1639220), (20, 901571), (22, 819610), (44, 409805), (55, 327844), (110, 163922), (121, 149020), (220, 81961), (242, 74510), (484, 37255), (605, 29804), (1210, 14902), (2420, 7451)]