20149520

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{4129}}^1$

素因数の和:4203

約数の個数: 40

約数和(自身を含む): 47627160

約数和(自身を除く): 27477640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4129, 4880, 8258, 16516, 20645, 33032, 41290, 66064, 82580, 165160, 251869, 330320, 503738, 1007476, 1259345, 2014952, 2518690, 4029904, 5037380, 10074760, 20149520]

約数ペア:

[(1, 20149520), (2, 10074760), (4, 5037380), (5, 4029904), (8, 2518690), (10, 2014952), (16, 1259345), (20, 1007476), (40, 503738), (61, 330320), (80, 251869), (122, 165160), (244, 82580), (305, 66064), (488, 41290), (610, 33032), (976, 20645), (1220, 16516), (2440, 8258), (4129, 4880)]