21190648

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{241}}^1\times {\mathrm{379}}^1$

素因数の和:655

約数の個数: 32

約数和(自身を含む): 41382000

約数和(自身を除く): 20191352

約数列:

[1, 2, 4, 8, 29, 58, 116, 232, 241, 379, 482, 758, 964, 1516, 1928, 3032, 6989, 10991, 13978, 21982, 27956, 43964, 55912, 87928, 91339, 182678, 365356, 730712, 2648831, 5297662, 10595324, 21190648]

約数ペア:

[(1, 21190648), (2, 10595324), (4, 5297662), (8, 2648831), (29, 730712), (58, 365356), (116, 182678), (232, 91339), (241, 87928), (379, 55912), (482, 43964), (758, 27956), (964, 21982), (1516, 13978), (1928, 10991), (3032, 6989)]