19939480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{45317}}^1$

素因数の和:45339

約数の個数: 32

約数和(自身を含む): 48943440

約数和(自身を除く): 29003960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 45317, 90634, 181268, 226585, 362536, 453170, 498487, 906340, 996974, 1812680, 1993948, 2492435, 3987896, 4984870, 9969740, 19939480]

約数ペア:

[(1, 19939480), (2, 9969740), (4, 4984870), (5, 3987896), (8, 2492435), (10, 1993948), (11, 1812680), (20, 996974), (22, 906340), (40, 498487), (44, 453170), (55, 362536), (88, 226585), (110, 181268), (220, 90634), (440, 45317)]