20890904

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{1699}}^1$

素因数の和:1787

約数の個数: 32

約数和(自身を含む): 41310000

約数和(自身を除く): 20419096

約数列:

[1, 2, 4, 8, 29, 53, 58, 106, 116, 212, 232, 424, 1537, 1699, 3074, 3398, 6148, 6796, 12296, 13592, 49271, 90047, 98542, 180094, 197084, 360188, 394168, 720376, 2611363, 5222726, 10445452, 20890904]

約数ペア:

[(1, 20890904), (2, 10445452), (4, 5222726), (8, 2611363), (29, 720376), (53, 394168), (58, 360188), (106, 197084), (116, 180094), (212, 98542), (232, 90047), (424, 49271), (1537, 13592), (1699, 12296), (3074, 6796), (3398, 6148)]