20666560

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1$

素因数の和:194

約数の個数: 112

約数和(自身を含む): 54315360

約数和(自身を除く): 33648800

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 29, 32, 34, 40, 58, 64, 68, 80, 85, 116, 131, 136, 145, 160, 170, 232, 262, 272, 290, 320, 340, 464, 493, 524, 544, 580, 655, 680, 928, 986, 1048, 1088, 1160, 1310, 1360, 1856, 1972, 2096, 2227, 2320, 2465, 2620, 2720, 3799, 3944, 4192, 4454, 4640, 4930, 5240, 5440, 7598, 7888, 8384, 8908, 9280, 9860, 10480, 11135, 15196, 15776, 17816, 18995, 19720, 20960, 22270, 30392, 31552, 35632, 37990, 39440, 41920, 44540, 60784, 64583, 71264, 75980, 78880, 89080, 121568, 129166, 142528, 151960, 157760, 178160, 243136, 258332, 303920, 322915, 356320, 516664, 607840, 645830, 712640, 1033328, 1215680, 1291660, 2066656, 2583320, 4133312, 5166640, 10333280, 20666560]

約数ペア:

[(1, 20666560), (2, 10333280), (4, 5166640), (5, 4133312), (8, 2583320), (10, 2066656), (16, 1291660), (17, 1215680), (20, 1033328), (29, 712640), (32, 645830), (34, 607840), (40, 516664), (58, 356320), (64, 322915), (68, 303920), (80, 258332), (85, 243136), (116, 178160), (131, 157760), (136, 151960), (145, 142528), (160, 129166), (170, 121568), (232, 89080), (262, 78880), (272, 75980), (290, 71264), (320, 64583), (340, 60784), (464, 44540), (493, 41920), (524, 39440), (544, 37990), (580, 35632), (655, 31552), (680, 30392), (928, 22270), (986, 20960), (1048, 19720), (1088, 18995), (1160, 17816), (1310, 15776), (1360, 15196), (1856, 11135), (1972, 10480), (2096, 9860), (2227, 9280), (2320, 8908), (2465, 8384), (2620, 7888), (2720, 7598), (3799, 5440), (3944, 5240), (4192, 4930), (4454, 4640)]