20289038

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{59}}^1$

素因数の和:126

約数の個数: 72

約数和(自身を含む): 40937400

約数和(自身を除く): 20648362

約数列:

[1, 2, 7, 11, 14, 22, 29, 49, 58, 59, 77, 98, 118, 121, 154, 203, 242, 319, 406, 413, 539, 638, 649, 826, 847, 1078, 1298, 1421, 1694, 1711, 2233, 2842, 2891, 3422, 3509, 4466, 4543, 5782, 5929, 7018, 7139, 9086, 11858, 11977, 14278, 15631, 18821, 23954, 24563, 31262, 31801, 37642, 49126, 49973, 63602, 83839, 99946, 131747, 167678, 171941, 207031, 263494, 343882, 349811, 414062, 699622, 922229, 1449217, 1844458, 2898434, 10144519, 20289038]

約数ペア:

[(1, 20289038), (2, 10144519), (7, 2898434), (11, 1844458), (14, 1449217), (22, 922229), (29, 699622), (49, 414062), (58, 349811), (59, 343882), (77, 263494), (98, 207031), (118, 171941), (121, 167678), (154, 131747), (203, 99946), (242, 83839), (319, 63602), (406, 49973), (413, 49126), (539, 37642), (638, 31801), (649, 31262), (826, 24563), (847, 23954), (1078, 18821), (1298, 15631), (1421, 14278), (1694, 11977), (1711, 11858), (2233, 9086), (2842, 7139), (2891, 7018), (3422, 5929), (3509, 5782), (4466, 4543)]