20588720

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{4219}}^1$

素因数の和:4293

約数の個数: 40

約数和(自身を含む): 48665040

約数和(自身を除く): 28076320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4219, 4880, 8438, 16876, 21095, 33752, 42190, 67504, 84380, 168760, 257359, 337520, 514718, 1029436, 1286795, 2058872, 2573590, 4117744, 5147180, 10294360, 20588720]

約数ペア:

[(1, 20588720), (2, 10294360), (4, 5147180), (5, 4117744), (8, 2573590), (10, 2058872), (16, 1286795), (20, 1029436), (40, 514718), (61, 337520), (80, 257359), (122, 168760), (244, 84380), (305, 67504), (488, 42190), (610, 33752), (976, 21095), (1220, 16876), (2440, 8438), (4219, 4880)]