821053840

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{540167}}^1$

素因数の和:540199

約数の個数: 40

約数和(自身を含む): 2009424960

約数和(自身を除く): 1188371120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 540167, 1080334, 2160668, 2700835, 4321336, 5401670, 8642672, 10263173, 10803340, 20526346, 21606680, 41052692, 43213360, 51315865, 82105384, 102631730, 164210768, 205263460, 410526920, 821053840]

約数ペア:

[(1, 821053840), (2, 410526920), (4, 205263460), (5, 164210768), (8, 102631730), (10, 82105384), (16, 51315865), (19, 43213360), (20, 41052692), (38, 21606680), (40, 20526346), (76, 10803340), (80, 10263173), (95, 8642672), (152, 5401670), (190, 4321336), (304, 2700835), (380, 2160668), (760, 1080334), (1520, 540167)]