20997414

素因数分解:

$2^1\times 3^3\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:374

約数の個数: 64

約数和(自身を含む): 50155200

約数和(自身を除く): 29157786

約数列:

[1, 2, 3, 6, 9, 17, 18, 27, 34, 51, 54, 89, 102, 153, 178, 257, 267, 306, 459, 514, 534, 771, 801, 918, 1513, 1542, 1602, 2313, 2403, 3026, 4369, 4539, 4626, 4806, 6939, 8738, 9078, 13107, 13617, 13878, 22873, 26214, 27234, 39321, 40851, 45746, 68619, 78642, 81702, 117963, 137238, 205857, 235926, 388841, 411714, 617571, 777682, 1166523, 1235142, 2333046, 3499569, 6999138, 10498707, 20997414]

約数ペア:

[(1, 20997414), (2, 10498707), (3, 6999138), (6, 3499569), (9, 2333046), (17, 1235142), (18, 1166523), (27, 777682), (34, 617571), (51, 411714), (54, 388841), (89, 235926), (102, 205857), (153, 137238), (178, 117963), (257, 81702), (267, 78642), (306, 68619), (459, 45746), (514, 40851), (534, 39321), (771, 27234), (801, 26214), (918, 22873), (1513, 13878), (1542, 13617), (1602, 13107), (2313, 9078), (2403, 8738), (3026, 6939), (4369, 4806), (4539, 4626)]