19898560

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{5653}}^1$

素因数の和:5681

約数の個数: 56

約数和(自身を含む): 51700176

約数和(自身を除く): 31801616

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 160, 176, 220, 320, 352, 440, 704, 880, 1760, 3520, 5653, 11306, 22612, 28265, 45224, 56530, 62183, 90448, 113060, 124366, 180896, 226120, 248732, 310915, 361792, 452240, 497464, 621830, 904480, 994928, 1243660, 1808960, 1989856, 2487320, 3979712, 4974640, 9949280, 19898560]

約数ペア:

[(1, 19898560), (2, 9949280), (4, 4974640), (5, 3979712), (8, 2487320), (10, 1989856), (11, 1808960), (16, 1243660), (20, 994928), (22, 904480), (32, 621830), (40, 497464), (44, 452240), (55, 361792), (64, 310915), (80, 248732), (88, 226120), (110, 180896), (160, 124366), (176, 113060), (220, 90448), (320, 62183), (352, 56530), (440, 45224), (704, 28265), (880, 22612), (1760, 11306), (3520, 5653)]