820047793520

素因数分解:

$2^4\times 5^1\times {\mathrm{16453}}^1\times {\mathrm{623023}}^1$

素因数の和:639489

約数の個数: 40

約数和(自身を含む): 1906730062656

約数和(自身を除く): 1086682269136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 16453, 32906, 65812, 82265, 131624, 164530, 263248, 329060, 623023, 658120, 1246046, 1316240, 2492092, 3115115, 4984184, 6230230, 9968368, 12460460, 24920920, 49841840, 10250597419, 20501194838, 41002389676, 51252987095, 82004779352, 102505974190, 164009558704, 205011948380, 410023896760, 820047793520]

約数ペア:

[(1, 820047793520), (2, 410023896760), (4, 205011948380), (5, 164009558704), (8, 102505974190), (10, 82004779352), (16, 51252987095), (20, 41002389676), (40, 20501194838), (80, 10250597419), (16453, 49841840), (32906, 24920920), (65812, 12460460), (82265, 9968368), (131624, 6230230), (164530, 4984184), (263248, 3115115), (329060, 2492092), (623023, 1316240), (658120, 1246046)]