51720720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{215503}}^1$

素因数の和:215519

約数の個数: 40

約数和(自身を含む): 160334976

約数和(自身を除く): 108614256

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 215503, 431006, 646509, 862012, 1077515, 1293018, 1724024, 2155030, 2586036, 3232545, 3448048, 4310060, 5172072, 6465090, 8620120, 10344144, 12930180, 17240240, 25860360, 51720720]

約数ペア:

[(1, 51720720), (2, 25860360), (3, 17240240), (4, 12930180), (5, 10344144), (6, 8620120), (8, 6465090), (10, 5172072), (12, 4310060), (15, 3448048), (16, 3232545), (20, 2586036), (24, 2155030), (30, 1724024), (40, 1293018), (48, 1077515), (60, 862012), (80, 646509), (120, 431006), (240, 215503)]