19922650

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:160

約数の個数: 72

約数和(自身を含む): 42301980

約数和(自身を除く): 22379330

約数列:

[1, 2, 5, 10, 11, 22, 25, 37, 50, 55, 74, 89, 110, 121, 178, 185, 242, 275, 370, 407, 445, 550, 605, 814, 890, 925, 979, 1210, 1850, 1958, 2035, 2225, 3025, 3293, 4070, 4450, 4477, 4895, 6050, 6586, 8954, 9790, 10175, 10769, 16465, 20350, 21538, 22385, 24475, 32930, 36223, 44770, 48950, 53845, 72446, 82325, 107690, 111925, 164650, 181115, 223850, 269225, 362230, 398453, 538450, 796906, 905575, 1811150, 1992265, 3984530, 9961325, 19922650]

約数ペア:

[(1, 19922650), (2, 9961325), (5, 3984530), (10, 1992265), (11, 1811150), (22, 905575), (25, 796906), (37, 538450), (50, 398453), (55, 362230), (74, 269225), (89, 223850), (110, 181115), (121, 164650), (178, 111925), (185, 107690), (242, 82325), (275, 72446), (370, 53845), (407, 48950), (445, 44770), (550, 36223), (605, 32930), (814, 24475), (890, 22385), (925, 21538), (979, 20350), (1210, 16465), (1850, 10769), (1958, 10175), (2035, 9790), (2225, 8954), (3025, 6586), (3293, 6050), (4070, 4895), (4450, 4477)]