19723220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2423}}^1$

素因数の和:2480

約数の個数: 48

約数和(自身を含む): 46424448

約数和(自身を除く): 26701228

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 370, 407, 740, 814, 1628, 2035, 2423, 4070, 4846, 8140, 9692, 12115, 24230, 26653, 48460, 53306, 89651, 106612, 133265, 179302, 266530, 358604, 448255, 533060, 896510, 986161, 1793020, 1972322, 3944644, 4930805, 9861610, 19723220]

約数ペア:

[(1, 19723220), (2, 9861610), (4, 4930805), (5, 3944644), (10, 1972322), (11, 1793020), (20, 986161), (22, 896510), (37, 533060), (44, 448255), (55, 358604), (74, 266530), (110, 179302), (148, 133265), (185, 106612), (220, 89651), (370, 53306), (407, 48460), (740, 26653), (814, 24230), (1628, 12115), (2035, 9692), (2423, 8140), (4070, 4846)]