28204904

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:139

約数の個数: 128

約数和(自身を含む): 71850240

約数和(自身を除く): 43645336

約数列:

[1, 2, 4, 7, 8, 13, 14, 17, 26, 28, 34, 43, 52, 53, 56, 68, 86, 91, 104, 106, 119, 136, 172, 182, 212, 221, 238, 301, 344, 364, 371, 424, 442, 476, 559, 602, 689, 728, 731, 742, 884, 901, 952, 1118, 1204, 1378, 1462, 1484, 1547, 1768, 1802, 2236, 2279, 2408, 2756, 2924, 2968, 3094, 3604, 3913, 4472, 4558, 4823, 5117, 5512, 5848, 6188, 6307, 7208, 7826, 9116, 9503, 9646, 10234, 11713, 12376, 12614, 15652, 15953, 18232, 19006, 19292, 20468, 23426, 25228, 29627, 31304, 31906, 38012, 38584, 38743, 40936, 46852, 50456, 59254, 63812, 66521, 76024, 77486, 81991, 93704, 118508, 127624, 133042, 154972, 163982, 207389, 237016, 266084, 271201, 309944, 327964, 414778, 503659, 532168, 542402, 655928, 829556, 1007318, 1084804, 1659112, 2014636, 2169608, 3525613, 4029272, 7051226, 14102452, 28204904]

約数ペア:

[(1, 28204904), (2, 14102452), (4, 7051226), (7, 4029272), (8, 3525613), (13, 2169608), (14, 2014636), (17, 1659112), (26, 1084804), (28, 1007318), (34, 829556), (43, 655928), (52, 542402), (53, 532168), (56, 503659), (68, 414778), (86, 327964), (91, 309944), (104, 271201), (106, 266084), (119, 237016), (136, 207389), (172, 163982), (182, 154972), (212, 133042), (221, 127624), (238, 118508), (301, 93704), (344, 81991), (364, 77486), (371, 76024), (424, 66521), (442, 63812), (476, 59254), (559, 50456), (602, 46852), (689, 40936), (728, 38743), (731, 38584), (742, 38012), (884, 31906), (901, 31304), (952, 29627), (1118, 25228), (1204, 23426), (1378, 20468), (1462, 19292), (1484, 19006), (1547, 18232), (1768, 15953), (1802, 15652), (2236, 12614), (2279, 12376), (2408, 11713), (2756, 10234), (2924, 9646), (2968, 9503), (3094, 9116), (3604, 7826), (3913, 7208), (4472, 6307), (4558, 6188), (4823, 5848), (5117, 5512)]