19964744

素因数分解:

$2^3\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{223}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 40965120

約数和(自身を除く): 21000376

約数列:

[1, 2, 4, 8, 19, 31, 38, 62, 76, 124, 152, 223, 248, 361, 446, 589, 722, 892, 1178, 1444, 1784, 2356, 2888, 4237, 4712, 6913, 8474, 11191, 13826, 16948, 22382, 27652, 33896, 44764, 55304, 80503, 89528, 131347, 161006, 262694, 322012, 525388, 644024, 1050776, 2495593, 4991186, 9982372, 19964744]

約数ペア:

[(1, 19964744), (2, 9982372), (4, 4991186), (8, 2495593), (19, 1050776), (31, 644024), (38, 525388), (62, 322012), (76, 262694), (124, 161006), (152, 131347), (223, 89528), (248, 80503), (361, 55304), (446, 44764), (589, 33896), (722, 27652), (892, 22382), (1178, 16948), (1444, 13826), (1784, 11191), (2356, 8474), (2888, 6913), (4237, 4712)]