19511954

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{257}}^1$

素因数の和:323

約数の個数: 64

約数和(自身を含む): 40124160

約数和(自身を除く): 20612206

約数列:

[1, 2, 7, 11, 14, 17, 22, 29, 34, 58, 77, 119, 154, 187, 203, 238, 257, 319, 374, 406, 493, 514, 638, 986, 1309, 1799, 2233, 2618, 2827, 3451, 3598, 4369, 4466, 5423, 5654, 6902, 7453, 8738, 10846, 14906, 19789, 30583, 37961, 39578, 48059, 52171, 61166, 75922, 81983, 96118, 104342, 126701, 163966, 253402, 336413, 573881, 672826, 886907, 1147762, 1393711, 1773814, 2787422, 9755977, 19511954]

約数ペア:

[(1, 19511954), (2, 9755977), (7, 2787422), (11, 1773814), (14, 1393711), (17, 1147762), (22, 886907), (29, 672826), (34, 573881), (58, 336413), (77, 253402), (119, 163966), (154, 126701), (187, 104342), (203, 96118), (238, 81983), (257, 75922), (319, 61166), (374, 52171), (406, 48059), (493, 39578), (514, 37961), (638, 30583), (986, 19789), (1309, 14906), (1799, 10846), (2233, 8738), (2618, 7453), (2827, 6902), (3451, 5654), (3598, 5423), (4369, 4466)]