21027520

素因数分解:

$2^6\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2857}}^1$

素因数の和:2897

約数の個数: 56

約数和(自身を含む): 52267104

約数和(自身を除く): 31239584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 160, 184, 230, 320, 368, 460, 736, 920, 1472, 1840, 2857, 3680, 5714, 7360, 11428, 14285, 22856, 28570, 45712, 57140, 65711, 91424, 114280, 131422, 182848, 228560, 262844, 328555, 457120, 525688, 657110, 914240, 1051376, 1314220, 2102752, 2628440, 4205504, 5256880, 10513760, 21027520]

約数ペア:

[(1, 21027520), (2, 10513760), (4, 5256880), (5, 4205504), (8, 2628440), (10, 2102752), (16, 1314220), (20, 1051376), (23, 914240), (32, 657110), (40, 525688), (46, 457120), (64, 328555), (80, 262844), (92, 228560), (115, 182848), (160, 131422), (184, 114280), (230, 91424), (320, 65711), (368, 57140), (460, 45712), (736, 28570), (920, 22856), (1472, 14285), (1840, 11428), (2857, 7360), (3680, 5714)]