20606704

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{499}}^1$

素因数の和:625

約数の個数: 40

約数和(自身を含む): 41850000

約数和(自身を除く): 21243296

約数列:

[1, 2, 4, 8, 16, 29, 58, 89, 116, 178, 232, 356, 464, 499, 712, 998, 1424, 1996, 2581, 3992, 5162, 7984, 10324, 14471, 20648, 28942, 41296, 44411, 57884, 88822, 115768, 177644, 231536, 355288, 710576, 1287919, 2575838, 5151676, 10303352, 20606704]

約数ペア:

[(1, 20606704), (2, 10303352), (4, 5151676), (8, 2575838), (16, 1287919), (29, 710576), (58, 355288), (89, 231536), (116, 177644), (178, 115768), (232, 88822), (356, 57884), (464, 44411), (499, 41296), (712, 28942), (998, 20648), (1424, 14471), (1996, 10324), (2581, 7984), (3992, 5162)]