20991804

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^2\times {\mathrm{6053}}^1$

素因数の和:6094

約数の個数: 36

約数和(自身を含む): 52040184

約数和(自身を除く): 31048380

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 204, 289, 578, 867, 1156, 1734, 3468, 6053, 12106, 18159, 24212, 36318, 72636, 102901, 205802, 308703, 411604, 617406, 1234812, 1749317, 3498634, 5247951, 6997268, 10495902, 20991804]

約数ペア:

[(1, 20991804), (2, 10495902), (3, 6997268), (4, 5247951), (6, 3498634), (12, 1749317), (17, 1234812), (34, 617406), (51, 411604), (68, 308703), (102, 205802), (204, 102901), (289, 72636), (578, 36318), (867, 24212), (1156, 18159), (1734, 12106), (3468, 6053)]