20786988

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1$

素因数の和:247

約数の個数: 96

約数和(自身を含む): 56125440

約数和(自身を除く): 35338452

約数列:

[1, 2, 3, 4, 6, 12, 17, 19, 31, 34, 38, 51, 57, 62, 68, 76, 93, 102, 114, 124, 173, 186, 204, 228, 323, 346, 372, 519, 527, 589, 646, 692, 969, 1038, 1054, 1178, 1292, 1581, 1767, 1938, 2076, 2108, 2356, 2941, 3162, 3287, 3534, 3876, 5363, 5882, 6324, 6574, 7068, 8823, 9861, 10013, 10726, 11764, 13148, 16089, 17646, 19722, 20026, 21452, 30039, 32178, 35292, 39444, 40052, 55879, 60078, 64356, 91171, 101897, 111758, 120156, 167637, 182342, 203794, 223516, 273513, 305691, 335274, 364684, 407588, 547026, 611382, 670548, 1094052, 1222764, 1732249, 3464498, 5196747, 6928996, 10393494, 20786988]

約数ペア:

[(1, 20786988), (2, 10393494), (3, 6928996), (4, 5196747), (6, 3464498), (12, 1732249), (17, 1222764), (19, 1094052), (31, 670548), (34, 611382), (38, 547026), (51, 407588), (57, 364684), (62, 335274), (68, 305691), (76, 273513), (93, 223516), (102, 203794), (114, 182342), (124, 167637), (173, 120156), (186, 111758), (204, 101897), (228, 91171), (323, 64356), (346, 60078), (372, 55879), (519, 40052), (527, 39444), (589, 35292), (646, 32178), (692, 30039), (969, 21452), (1038, 20026), (1054, 19722), (1178, 17646), (1292, 16089), (1581, 13148), (1767, 11764), (1938, 10726), (2076, 10013), (2108, 9861), (2356, 8823), (2941, 7068), (3162, 6574), (3287, 6324), (3534, 5882), (3876, 5363)]