18849520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12401}}^1$

素因数の和:12433

約数の個数: 40

約数和(自身を含む): 46135440

約数和(自身を除く): 27285920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 12401, 24802, 49604, 62005, 99208, 124010, 198416, 235619, 248020, 471238, 496040, 942476, 992080, 1178095, 1884952, 2356190, 3769904, 4712380, 9424760, 18849520]

約数ペア:

[(1, 18849520), (2, 9424760), (4, 4712380), (5, 3769904), (8, 2356190), (10, 1884952), (16, 1178095), (19, 992080), (20, 942476), (38, 496040), (40, 471238), (76, 248020), (80, 235619), (95, 198416), (152, 124010), (190, 99208), (304, 62005), (380, 49604), (760, 24802), (1520, 12401)]