21705828

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1$

素因数の和:177

約数の個数: 96

約数和(自身を含む): 57200640

約数和(自身を除く): 35494812

約数列:

[1, 2, 3, 4, 6, 12, 19, 31, 37, 38, 57, 62, 74, 76, 83, 93, 111, 114, 124, 148, 166, 186, 222, 228, 249, 332, 372, 444, 498, 589, 703, 996, 1147, 1178, 1406, 1577, 1767, 2109, 2294, 2356, 2573, 2812, 3071, 3154, 3441, 3534, 4218, 4588, 4731, 5146, 6142, 6308, 6882, 7068, 7719, 8436, 9213, 9462, 10292, 12284, 13764, 15438, 18426, 18924, 21793, 30876, 36852, 43586, 48887, 58349, 65379, 87172, 95201, 97774, 116698, 130758, 146661, 175047, 190402, 195548, 233396, 261516, 285603, 293322, 350094, 380804, 571206, 586644, 700188, 1142412, 1808819, 3617638, 5426457, 7235276, 10852914, 21705828]

約数ペア:

[(1, 21705828), (2, 10852914), (3, 7235276), (4, 5426457), (6, 3617638), (12, 1808819), (19, 1142412), (31, 700188), (37, 586644), (38, 571206), (57, 380804), (62, 350094), (74, 293322), (76, 285603), (83, 261516), (93, 233396), (111, 195548), (114, 190402), (124, 175047), (148, 146661), (166, 130758), (186, 116698), (222, 97774), (228, 95201), (249, 87172), (332, 65379), (372, 58349), (444, 48887), (498, 43586), (589, 36852), (703, 30876), (996, 21793), (1147, 18924), (1178, 18426), (1406, 15438), (1577, 13764), (1767, 12284), (2109, 10292), (2294, 9462), (2356, 9213), (2573, 8436), (2812, 7719), (3071, 7068), (3154, 6882), (3441, 6308), (3534, 6142), (4218, 5146), (4588, 4731)]