19183280

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{3931}}^1$

素因数の和:4005

約数の個数: 40

約数和(自身を含む): 45343824

約数和(自身を除く): 26160544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 3931, 4880, 7862, 15724, 19655, 31448, 39310, 62896, 78620, 157240, 239791, 314480, 479582, 959164, 1198955, 1918328, 2397910, 3836656, 4795820, 9591640, 19183280]

約数ペア:

[(1, 19183280), (2, 9591640), (4, 4795820), (5, 3836656), (8, 2397910), (10, 1918328), (16, 1198955), (20, 959164), (40, 479582), (61, 314480), (80, 239791), (122, 157240), (244, 78620), (305, 62896), (488, 39310), (610, 31448), (976, 19655), (1220, 15724), (2440, 7862), (3931, 4880)]