21438208

素因数分解:

$2^8\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{331}}^1$

素因数の和:381

約数の個数: 72

約数和(自身を含む): 48859776

約数和(自身を除く): 27421568

約数列:

[1, 2, 4, 8, 11, 16, 22, 23, 32, 44, 46, 64, 88, 92, 128, 176, 184, 253, 256, 331, 352, 368, 506, 662, 704, 736, 1012, 1324, 1408, 1472, 2024, 2648, 2816, 2944, 3641, 4048, 5296, 5888, 7282, 7613, 8096, 10592, 14564, 15226, 16192, 21184, 29128, 30452, 32384, 42368, 58256, 60904, 64768, 83743, 84736, 116512, 121808, 167486, 233024, 243616, 334972, 466048, 487232, 669944, 932096, 974464, 1339888, 1948928, 2679776, 5359552, 10719104, 21438208]

約数ペア:

[(1, 21438208), (2, 10719104), (4, 5359552), (8, 2679776), (11, 1948928), (16, 1339888), (22, 974464), (23, 932096), (32, 669944), (44, 487232), (46, 466048), (64, 334972), (88, 243616), (92, 233024), (128, 167486), (176, 121808), (184, 116512), (253, 84736), (256, 83743), (331, 64768), (352, 60904), (368, 58256), (506, 42368), (662, 32384), (704, 30452), (736, 29128), (1012, 21184), (1324, 16192), (1408, 15226), (1472, 14564), (2024, 10592), (2648, 8096), (2816, 7613), (2944, 7282), (3641, 5888), (4048, 5296)]