21617428

素因数分解:

$2^2\times 7^2\times {\mathrm{53}}^1\times {\mathrm{2081}}^1$

素因数の和:2152

約数の個数: 36

約数和(自身を含む): 44858772

約数和(自身を除く): 23241344

約数列:

[1, 2, 4, 7, 14, 28, 49, 53, 98, 106, 196, 212, 371, 742, 1484, 2081, 2597, 4162, 5194, 8324, 10388, 14567, 29134, 58268, 101969, 110293, 203938, 220586, 407876, 441172, 772051, 1544102, 3088204, 5404357, 10808714, 21617428]

約数ペア:

[(1, 21617428), (2, 10808714), (4, 5404357), (7, 3088204), (14, 1544102), (28, 772051), (49, 441172), (53, 407876), (98, 220586), (106, 203938), (196, 110293), (212, 101969), (371, 58268), (742, 29134), (1484, 14567), (2081, 10388), (2597, 8324), (4162, 5194)]