20972320

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:218

約数の個数: 96

約数和(自身を含む): 53343360

約数和(自身を除く): 32371040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 41, 46, 80, 82, 92, 115, 139, 160, 164, 184, 205, 230, 278, 328, 368, 410, 460, 556, 656, 695, 736, 820, 920, 943, 1112, 1312, 1390, 1640, 1840, 1886, 2224, 2780, 3197, 3280, 3680, 3772, 4448, 4715, 5560, 5699, 6394, 6560, 7544, 9430, 11120, 11398, 12788, 15088, 15985, 18860, 22240, 22796, 25576, 28495, 30176, 31970, 37720, 45592, 51152, 56990, 63940, 75440, 91184, 102304, 113980, 127880, 131077, 150880, 182368, 227960, 255760, 262154, 455920, 511520, 524308, 655385, 911840, 1048616, 1310770, 2097232, 2621540, 4194464, 5243080, 10486160, 20972320]

約数ペア:

[(1, 20972320), (2, 10486160), (4, 5243080), (5, 4194464), (8, 2621540), (10, 2097232), (16, 1310770), (20, 1048616), (23, 911840), (32, 655385), (40, 524308), (41, 511520), (46, 455920), (80, 262154), (82, 255760), (92, 227960), (115, 182368), (139, 150880), (160, 131077), (164, 127880), (184, 113980), (205, 102304), (230, 91184), (278, 75440), (328, 63940), (368, 56990), (410, 51152), (460, 45592), (556, 37720), (656, 31970), (695, 30176), (736, 28495), (820, 25576), (920, 22796), (943, 22240), (1112, 18860), (1312, 15985), (1390, 15088), (1640, 12788), (1840, 11398), (1886, 11120), (2224, 9430), (2780, 7544), (3197, 6560), (3280, 6394), (3680, 5699), (3772, 5560), (4448, 4715)]